Enumerable.Max Enumerable.Max Enumerable.Max Enumerable.Max Method

定義

値のシーケンスの最大値を返します。Returns the maximum value in a sequence of values.

オーバーロード

Max(IEnumerable<Nullable<Single>>) Max(IEnumerable<Nullable<Single>>) Max(IEnumerable<Nullable<Single>>) Max(IEnumerable<Nullable<Single>>)

null 許容の Single 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Single values.

Max(IEnumerable<Int32>) Max(IEnumerable<Int32>) Max(IEnumerable<Int32>) Max(IEnumerable<Int32>)

Int32 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Int32 values.

Max(IEnumerable<Nullable<Int64>>) Max(IEnumerable<Nullable<Int64>>) Max(IEnumerable<Nullable<Int64>>) Max(IEnumerable<Nullable<Int64>>)

null 許容の Int64 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Int64 values.

Max(IEnumerable<Single>) Max(IEnumerable<Single>) Max(IEnumerable<Single>) Max(IEnumerable<Single>)

Single 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Single values.

Max(IEnumerable<Nullable<Int32>>) Max(IEnumerable<Nullable<Int32>>) Max(IEnumerable<Nullable<Int32>>) Max(IEnumerable<Nullable<Int32>>)

null 許容の Int32 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Int32 values.

Max(IEnumerable<Decimal>) Max(IEnumerable<Decimal>) Max(IEnumerable<Decimal>) Max(IEnumerable<Decimal>)

Decimal 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Decimal values.

Max(IEnumerable<Nullable<Decimal>>) Max(IEnumerable<Nullable<Decimal>>) Max(IEnumerable<Nullable<Decimal>>) Max(IEnumerable<Nullable<Decimal>>)

null 許容の Decimal 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Decimal values.

Max(IEnumerable<Int64>) Max(IEnumerable<Int64>) Max(IEnumerable<Int64>) Max(IEnumerable<Int64>)

Int64 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Int64 values.

Max(IEnumerable<Double>) Max(IEnumerable<Double>) Max(IEnumerable<Double>) Max(IEnumerable<Double>)

Double 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Double values.

Max(IEnumerable<Nullable<Double>>) Max(IEnumerable<Nullable<Double>>) Max(IEnumerable<Nullable<Double>>) Max(IEnumerable<Nullable<Double>>)

null 許容の Double 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Double values.

Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>)

ジェネリック シーケンスの各要素に対して変換関数を呼び出し、結果の最大値を返します。Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>)

シーケンスの各要素に対して変換関数を呼び出し、Single の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Single value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Single の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Single value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Int64 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Int32 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Double の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Double value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>)

シーケンスの各要素に対して変換関数を呼び出し、Int64 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Int64 value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)

シーケンスの各要素に対して変換関数を呼び出し、Int32 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Int32 value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>)

シーケンスの各要素に対して変換関数を呼び出し、Double の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Double value.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>)

シーケンスの各要素に対して変換関数を呼び出し、Decimal の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Decimal value.

Max<TSource>(IEnumerable<TSource>) Max<TSource>(IEnumerable<TSource>) Max<TSource>(IEnumerable<TSource>) Max<TSource>(IEnumerable<TSource>)

ジェネリック シーケンスの最大値を返します。Returns the maximum value in a generic sequence.

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Decimal の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value.

Max(IEnumerable<Nullable<Single>>) Max(IEnumerable<Nullable<Single>>) Max(IEnumerable<Nullable<Single>>) Max(IEnumerable<Nullable<Single>>)

null 許容の Single 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Single values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Max(System::Collections::Generic::IEnumerable<Nullable<float>> ^ source);
public static Nullable<float> Max (this System.Collections.Generic.IEnumerable<Nullable<float>> source);
static member Max : seq<Nullable<single>> -> Nullable<single>
<Extension()>
Public Function Max (source As IEnumerable(Of Nullable(Of Single))) As Nullable(Of Single)

パラメーター

source
IEnumerable<Nullable<Single>>

最大値を確認する対象となる null 許容の Single 値のシーケンス。A sequence of nullable Single values to determine the maximum value of.

戻り値

シーケンスの最大値に対応する Nullable<Single> 型 (C# の場合) または Nullable(Of Single) 型 (Visual Basic の場合) の値。A value of type Nullable<Single> in C# or Nullable(Of Single) in Visual Basic that corresponds to the maximum value in the sequence.

例外

次のコード例は、使用する方法を示しますMax(IEnumerable<Nullable<Double>>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Nullable<Double>>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

double?[] doubles = { null, 1.5E+104, 9E+103, -2E+103 };

double? max = doubles.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 1.5E+104.
*/
' Create an array of Nullable Double values.
Dim doubles() As Nullable(Of Double) =
{Nothing, 1.5E+104, 9.0E+103, -2.0E+103}

' Determine the maximum value in the array.
Dim max As Nullable(Of Double) = doubles.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 1.5E+104

注釈

Max(IEnumerable<Nullable<Single>>)メソッドは、Singleの実装IComparable<T>値を比較します。The Max(IEnumerable<Nullable<Single>>) method uses the Single implementation of IComparable<T> to compare values.

ソース シーケンスが空かは値のみを含むかどうかnull、この関数を返しますnullします。If the source sequence is empty or contains only values that are null, this function returns null.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Int32>) Max(IEnumerable<Int32>) Max(IEnumerable<Int32>) Max(IEnumerable<Int32>)

Int32 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Int32 values.

public:
[System::Runtime::CompilerServices::Extension]
 static int Max(System::Collections::Generic::IEnumerable<int> ^ source);
public static int Max (this System.Collections.Generic.IEnumerable<int> source);
static member Max : seq<int> -> int
<Extension()>
Public Function Max (source As IEnumerable(Of Integer)) As Integer

パラメーター

source
IEnumerable<Int32>

最大値を確認する対象となる Int32 値のシーケンス。A sequence of Int32 values to determine the maximum value of.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax(IEnumerable<Int64>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Int64>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

List<long> longs = new List<long> { 4294967296L, 466855135L, 81125L };

long max = longs.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 4294967296.
*/
' Create a list of Long values.
Dim longs As New List(Of Long)(New Long() _
                           {4294967296L, 466855135L, 81125L})

' Get the maximum value in the list.
Dim max As Long = longs.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 4294967296

注釈

Max(IEnumerable<Int32>)メソッドは、Int32の実装IComparable<T>値を比較します。The Max(IEnumerable<Int32>) method uses the Int32 implementation of IComparable<T> to compare values.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Nullable<Int64>>) Max(IEnumerable<Nullable<Int64>>) Max(IEnumerable<Nullable<Int64>>) Max(IEnumerable<Nullable<Int64>>)

null 許容の Int64 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Int64 values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<long> Max(System::Collections::Generic::IEnumerable<Nullable<long>> ^ source);
public static Nullable<long> Max (this System.Collections.Generic.IEnumerable<Nullable<long>> source);
static member Max : seq<Nullable<int64>> -> Nullable<int64>
<Extension()>
Public Function Max (source As IEnumerable(Of Nullable(Of Long))) As Nullable(Of Long)

パラメーター

source
IEnumerable<Nullable<Int64>>

最大値を確認する対象となる null 許容の Int64 値のシーケンス。A sequence of nullable Int64 values to determine the maximum value of.

戻り値

シーケンスの最大値に対応する Nullable<Int64> 型 (C# の場合) または Nullable(Of Int64) 型 (Visual Basic の場合) の値。A value of type Nullable<Int64> in C# or Nullable(Of Int64) in Visual Basic that corresponds to the maximum value in the sequence.

例外

次のコード例は、使用する方法を示しますMax(IEnumerable<Nullable<Double>>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Nullable<Double>>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

double?[] doubles = { null, 1.5E+104, 9E+103, -2E+103 };

double? max = doubles.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 1.5E+104.
*/
' Create an array of Nullable Double values.
Dim doubles() As Nullable(Of Double) =
{Nothing, 1.5E+104, 9.0E+103, -2.0E+103}

' Determine the maximum value in the array.
Dim max As Nullable(Of Double) = doubles.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 1.5E+104

注釈

Max(IEnumerable<Nullable<Int64>>)メソッドは、Int64の実装IComparable<T>値を比較します。The Max(IEnumerable<Nullable<Int64>>) method uses the Int64 implementation of IComparable<T> to compare values.

ソース シーケンスが空かは値のみを含むかどうかnull、この関数を返しますnullします。If the source sequence is empty or contains only values that are null, this function returns null.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Single>) Max(IEnumerable<Single>) Max(IEnumerable<Single>) Max(IEnumerable<Single>)

Single 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Single values.

public:
[System::Runtime::CompilerServices::Extension]
 static float Max(System::Collections::Generic::IEnumerable<float> ^ source);
public static float Max (this System.Collections.Generic.IEnumerable<float> source);
static member Max : seq<single> -> single
<Extension()>
Public Function Max (source As IEnumerable(Of Single)) As Single

パラメーター

source
IEnumerable<Single>

最大値を確認する対象となる Single 値のシーケンス。A sequence of Single values to determine the maximum value of.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax(IEnumerable<Int64>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Int64>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

List<long> longs = new List<long> { 4294967296L, 466855135L, 81125L };

long max = longs.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 4294967296.
*/
' Create a list of Long values.
Dim longs As New List(Of Long)(New Long() _
                           {4294967296L, 466855135L, 81125L})

' Get the maximum value in the list.
Dim max As Long = longs.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 4294967296

注釈

Max(IEnumerable<Single>)メソッドは、Singleの実装IComparable<T>値を比較します。The Max(IEnumerable<Single>) method uses the Single implementation of IComparable<T> to compare values.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Nullable<Int32>>) Max(IEnumerable<Nullable<Int32>>) Max(IEnumerable<Nullable<Int32>>) Max(IEnumerable<Nullable<Int32>>)

null 許容の Int32 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Int32 values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<int> Max(System::Collections::Generic::IEnumerable<Nullable<int>> ^ source);
public static Nullable<int> Max (this System.Collections.Generic.IEnumerable<Nullable<int>> source);
static member Max : seq<Nullable<int>> -> Nullable<int>
<Extension()>
Public Function Max (source As IEnumerable(Of Nullable(Of Integer))) As Nullable(Of Integer)

パラメーター

source
IEnumerable<Nullable<Int32>>

最大値を確認する対象となる null 許容の Int32 値のシーケンス。A sequence of nullable Int32 values to determine the maximum value of.

戻り値

シーケンスの最大値に対応する Nullable<Int32> 型 (C# の場合) または Nullable(Of Int32) 型 (Visual Basic の場合) の値。A value of type Nullable<Int32> in C# or Nullable(Of Int32) in Visual Basic that corresponds to the maximum value in the sequence.

例外

次のコード例は、使用する方法を示しますMax(IEnumerable<Nullable<Double>>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Nullable<Double>>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

double?[] doubles = { null, 1.5E+104, 9E+103, -2E+103 };

double? max = doubles.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 1.5E+104.
*/
' Create an array of Nullable Double values.
Dim doubles() As Nullable(Of Double) =
{Nothing, 1.5E+104, 9.0E+103, -2.0E+103}

' Determine the maximum value in the array.
Dim max As Nullable(Of Double) = doubles.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 1.5E+104

注釈

Max(IEnumerable<Nullable<Int32>>)メソッドは、Int32の実装IComparable<T>値を比較します。The Max(IEnumerable<Nullable<Int32>>) method uses the Int32 implementation of IComparable<T> to compare values.

ソース シーケンスが空かは値のみを含むかどうかnull、この関数を返しますnullします。If the source sequence is empty or contains only values that are null, this function returns null.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Decimal>) Max(IEnumerable<Decimal>) Max(IEnumerable<Decimal>) Max(IEnumerable<Decimal>)

Decimal 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Decimal values.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Max(System::Collections::Generic::IEnumerable<System::Decimal> ^ source);
public static decimal Max (this System.Collections.Generic.IEnumerable<decimal> source);
static member Max : seq<decimal> -> decimal
<Extension()>
Public Function Max (source As IEnumerable(Of Decimal)) As Decimal

パラメーター

source
IEnumerable<Decimal>

最大値を確認する対象となる Decimal 値のシーケンス。A sequence of Decimal values to determine the maximum value of.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax(IEnumerable<Int64>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Int64>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

List<long> longs = new List<long> { 4294967296L, 466855135L, 81125L };

long max = longs.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 4294967296.
*/
' Create a list of Long values.
Dim longs As New List(Of Long)(New Long() _
                           {4294967296L, 466855135L, 81125L})

' Get the maximum value in the list.
Dim max As Long = longs.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 4294967296

注釈

Max(IEnumerable<Decimal>)メソッドは、Decimalの実装IComparable<T>値を比較します。The Max(IEnumerable<Decimal>) method uses the Decimal implementation of IComparable<T> to compare values.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Nullable<Decimal>>) Max(IEnumerable<Nullable<Decimal>>) Max(IEnumerable<Nullable<Decimal>>) Max(IEnumerable<Nullable<Decimal>>)

null 許容の Decimal 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Decimal values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Max(System::Collections::Generic::IEnumerable<Nullable<System::Decimal>> ^ source);
public static Nullable<decimal> Max (this System.Collections.Generic.IEnumerable<Nullable<decimal>> source);
static member Max : seq<Nullable<decimal>> -> Nullable<decimal>
<Extension()>
Public Function Max (source As IEnumerable(Of Nullable(Of Decimal))) As Nullable(Of Decimal)

パラメーター

source
IEnumerable<Nullable<Decimal>>

最大値を確認する対象となる null 許容の Decimal 値のシーケンス。A sequence of nullable Decimal values to determine the maximum value of.

戻り値

シーケンスの最大値に対応する Nullable<Decimal> 型 (C# の場合) または Nullable(Of Decimal) 型 (Visual Basic の場合) の値。A value of type Nullable<Decimal> in C# or Nullable(Of Decimal) in Visual Basic that corresponds to the maximum value in the sequence.

例外

次のコード例は、使用する方法を示しますMax(IEnumerable<Nullable<Double>>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Nullable<Double>>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

double?[] doubles = { null, 1.5E+104, 9E+103, -2E+103 };

double? max = doubles.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 1.5E+104.
*/
' Create an array of Nullable Double values.
Dim doubles() As Nullable(Of Double) =
{Nothing, 1.5E+104, 9.0E+103, -2.0E+103}

' Determine the maximum value in the array.
Dim max As Nullable(Of Double) = doubles.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 1.5E+104

注釈

Max(IEnumerable<Nullable<Decimal>>)メソッドは、Decimalの実装IComparable<T>値を比較します。The Max(IEnumerable<Nullable<Decimal>>) method uses the Decimal implementation of IComparable<T> to compare values.

ソース シーケンスが空かは値のみを含むかどうかnull、この関数を返しますnullします。If the source sequence is empty or contains only values that are null, this function returns null.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Int64>) Max(IEnumerable<Int64>) Max(IEnumerable<Int64>) Max(IEnumerable<Int64>)

Int64 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Int64 values.

public:
[System::Runtime::CompilerServices::Extension]
 static long Max(System::Collections::Generic::IEnumerable<long> ^ source);
public static long Max (this System.Collections.Generic.IEnumerable<long> source);
static member Max : seq<int64> -> int64
<Extension()>
Public Function Max (source As IEnumerable(Of Long)) As Long

パラメーター

source
IEnumerable<Int64>

最大値を確認する対象となる Int64 値のシーケンス。A sequence of Int64 values to determine the maximum value of.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax(IEnumerable<Int64>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Int64>) to determine the maximum value in a sequence.

List<long> longs = new List<long> { 4294967296L, 466855135L, 81125L };

long max = longs.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 4294967296.
*/
' Create a list of Long values.
Dim longs As New List(Of Long)(New Long() _
                           {4294967296L, 466855135L, 81125L})

' Get the maximum value in the list.
Dim max As Long = longs.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 4294967296

注釈

Max(IEnumerable<Int64>)メソッドは、Int64の実装IComparable<T>値を比較します。The Max(IEnumerable<Int64>) method uses the Int64 implementation of IComparable<T> to compare values.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Double>) Max(IEnumerable<Double>) Max(IEnumerable<Double>) Max(IEnumerable<Double>)

Double 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of Double values.

public:
[System::Runtime::CompilerServices::Extension]
 static double Max(System::Collections::Generic::IEnumerable<double> ^ source);
public static double Max (this System.Collections.Generic.IEnumerable<double> source);
static member Max : seq<double> -> double
<Extension()>
Public Function Max (source As IEnumerable(Of Double)) As Double

パラメーター

source
IEnumerable<Double>

最大値を確認する対象となる Double 値のシーケンス。A sequence of Double values to determine the maximum value of.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax(IEnumerable<Int64>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Int64>) to determine the maximum value in a sequence.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、ソース シーケンスの要素を適切な数値型の要素に置き換えます。To extend the example to this topic, substitute the elements of the source sequence with elements of the appropriate numerical type.

List<long> longs = new List<long> { 4294967296L, 466855135L, 81125L };

long max = longs.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 4294967296.
*/
' Create a list of Long values.
Dim longs As New List(Of Long)(New Long() _
                           {4294967296L, 466855135L, 81125L})

' Get the maximum value in the list.
Dim max As Long = longs.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 4294967296

注釈

Max(IEnumerable<Double>)メソッドは、Doubleの実装IComparable<T>値を比較します。The Max(IEnumerable<Double>) method uses the Double implementation of IComparable<T> to compare values.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max(IEnumerable<Nullable<Double>>) Max(IEnumerable<Nullable<Double>>) Max(IEnumerable<Nullable<Double>>) Max(IEnumerable<Nullable<Double>>)

null 許容の Double 値のシーケンスの最大値を返します。Returns the maximum value in a sequence of nullable Double values.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Max(System::Collections::Generic::IEnumerable<Nullable<double>> ^ source);
public static Nullable<double> Max (this System.Collections.Generic.IEnumerable<Nullable<double>> source);
static member Max : seq<Nullable<double>> -> Nullable<double>
<Extension()>
Public Function Max (source As IEnumerable(Of Nullable(Of Double))) As Nullable(Of Double)

パラメーター

source
IEnumerable<Nullable<Double>>

最大値を確認する対象となる null 許容の Double 値のシーケンス。A sequence of nullable Double values to determine the maximum value of.

戻り値

シーケンスの最大値に対応する Nullable<Double> 型 (C# の場合) または Nullable(Of Double) 型 (Visual Basic の場合) の値。A value of type Nullable<Double> in C# or Nullable(Of Double) in Visual Basic that corresponds to the maximum value in the sequence.

例外

次のコード例は、使用する方法を示しますMax(IEnumerable<Nullable<Double>>)シーケンスの最大値を決定します。The following code example demonstrates how to use Max(IEnumerable<Nullable<Double>>) to determine the maximum value in a sequence.

double?[] doubles = { null, 1.5E+104, 9E+103, -2E+103 };

double? max = doubles.Max();

Console.WriteLine("The largest number is {0}.", max);

/*
 This code produces the following output:

 The largest number is 1.5E+104.
*/
' Create an array of Nullable Double values.
Dim doubles() As Nullable(Of Double) =
{Nothing, 1.5E+104, 9.0E+103, -2.0E+103}

' Determine the maximum value in the array.
Dim max As Nullable(Of Double) = doubles.Max()

' Display the result.
MsgBox("The largest number is " & max)

' This code produces the following output:
'
' The largest number is 1.5E+104

注釈

Max(IEnumerable<Nullable<Double>>)メソッドは、Doubleの実装IComparable<T>値を比較します。The Max(IEnumerable<Nullable<Double>>) method uses the Double implementation of IComparable<T> to compare values.

ソース シーケンスが空かは値のみを含むかどうかnull、この関数を返しますnullします。If the source sequence is empty or contains only values that are null, this function returns null.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>)

ジェネリック シーケンスの各要素に対して変換関数を呼び出し、結果の最大値を返します。Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.

public:
generic <typename TSource, typename TResult>
[System::Runtime::CompilerServices::Extension]
 static TResult Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, TResult> ^ selector);
public static TResult Max<TSource,TResult> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,TResult> selector);
static member Max : seq<'Source> * Func<'Source, 'Result> -> 'Result
<Extension()>
Public Function Max(Of TSource, TResult) (source As IEnumerable(Of TSource), selector As Func(Of TSource, TResult)) As TResult

型パラメーター

TSource

source の要素の型。The type of the elements of source.

TResult

selector によって返される値の型。The type of the value returned by selector.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,TResult>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

TResult TResult TResult TResult

シーケンスの最大値。The maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

場合型TResult実装IComparable<T>、このメソッドでは、その実装を使用して、値を比較します。If type TResult implements IComparable<T>, this method uses that implementation to compare values. 場合は、型TResult実装IComparable、その実装を使用して値を比較します。Otherwise, if type TResult implements IComparable, that implementation is used to compare values.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>)

シーケンスの各要素に対して変換関数を呼び出し、Single の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Single value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static float Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, float> ^ selector);
public static float Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,float> selector);
static member Max : seq<'Source> * Func<'Source, single> -> single
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Single)) As Single

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Single>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>)メソッドは、Singleの実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) method uses the Single implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceを数値の型に特にSingleします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Single.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Single の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Single value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<float>> ^ selector);
public static Nullable<float> Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<float>> selector);
static member Max : seq<'Source> * Func<'Source, Nullable<single>> -> Nullable<single>
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Single))) As Nullable(Of Single)

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Nullable<Single>>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値に対応する Nullable<Single> 型 (C# の場合) または Nullable(Of Single) 型 (Visual Basic の場合) の値。The value of type Nullable<Single> in C# or Nullable(Of Single) in Visual Basic that corresponds to the maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>)メソッドは、Singleの実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) method uses the Single implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceに数値型では、具体的にはNullable<Single>(C#) またはNullable(Of Single)Visual Basic でします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Nullable<Single> in C# or Nullable(Of Single) in Visual Basic.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Int64 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<long> Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<long>> ^ selector);
public static Nullable<long> Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<long>> selector);
static member Max : seq<'Source> * Func<'Source, Nullable<int64>> -> Nullable<int64>
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Long))) As Nullable(Of Long)

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Nullable<Int64>>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値に対応する Nullable<Int64> 型 (C# の場合) または Nullable(Of Int64) 型 (Visual Basic の場合) の値。The value of type Nullable<Int64> in C# or Nullable(Of Int64) in Visual Basic that corresponds to the maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>)メソッドは、Int64の実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) method uses the Int64 implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceに数値型では、具体的にはNullable<Int64>(C#) またはNullable(Of Int64)Visual Basic でします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Nullable<Int64> in C# or Nullable(Of Int64) in Visual Basic.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Int32 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<int> Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<int>> ^ selector);
public static Nullable<int> Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<int>> selector);
static member Max : seq<'Source> * Func<'Source, Nullable<int>> -> Nullable<int>
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Integer))) As Nullable(Of Integer)

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Nullable<Int32>>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値に対応する Nullable<Int32> 型 (C# の場合) または Nullable(Of Int32) 型 (Visual Basic の場合) の値。The value of type Nullable<Int32> in C# or Nullable(Of Int32) in Visual Basic that corresponds to the maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>)メソッドは、Int32の実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) method uses the Int32 implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceに数値型では、具体的にはNullable<Int32>(C#) またはNullable(Of Int32)Visual Basic でします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Nullable<Int32> in C# or Nullable(Of Int32) in Visual Basic.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Double の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Double value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<double>> ^ selector);
public static Nullable<double> Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<double>> selector);
static member Max : seq<'Source> * Func<'Source, Nullable<double>> -> Nullable<double>
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Double))) As Nullable(Of Double)

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Nullable<Double>>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値に対応する Nullable<Double> 型 (C# の場合) または Nullable(Of Double) 型 (Visual Basic の場合) の値。The value of type Nullable<Double> in C# or Nullable(Of Double) in Visual Basic that corresponds to the maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>)メソッドは、Doubleの実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) method uses the Double implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceに数値型では、具体的にはNullable<Double>(C#) またはNullable(Of Double)Visual Basic でします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Nullable<Double> in C# or Nullable(Of Double) in Visual Basic.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>)

シーケンスの各要素に対して変換関数を呼び出し、Int64 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Int64 value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static long Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, long> ^ selector);
public static long Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,long> selector);
static member Max : seq<'Source> * Func<'Source, int64> -> int64
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Long)) As Long

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Int64>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>)メソッドは、Int64の実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) method uses the Int64 implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceを数値の型に特にInt64します。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Int64.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)

シーケンスの各要素に対して変換関数を呼び出し、Int32 の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Int32 value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static int Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, int> ^ selector);
public static int Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,int> selector);
static member Max : seq<'Source> * Func<'Source, int> -> int
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Integer)) As Integer

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Int32>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)メソッドは、Int32の実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) method uses the Int32 implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceを数値の型に特にInt32します。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Int32.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>)

シーケンスの各要素に対して変換関数を呼び出し、Double の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Double value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, double> ^ selector);
public static double Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,double> selector);
static member Max : seq<'Source> * Func<'Source, double> -> double
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Double)) As Double

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Double>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>)メソッドは、Doubleの実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) method uses the Double implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceを数値の型に特にDoubleします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Double.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>)

シーケンスの各要素に対して変換関数を呼び出し、Decimal の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum Decimal value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, System::Decimal> ^ selector);
public static decimal Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,decimal> selector);
static member Max : seq<'Source> * Func<'Source, decimal> -> decimal
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Decimal)) As Decimal

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Decimal>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値。The maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

source に要素が含まれていません。source contains no elements.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>)メソッドは、Decimalの実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) method uses the Decimal implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceを数値の型に特にDecimalします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Decimal.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>) Max<TSource>(IEnumerable<TSource>) Max<TSource>(IEnumerable<TSource>) Max<TSource>(IEnumerable<TSource>)

ジェネリック シーケンスの最大値を返します。Returns the maximum value in a generic sequence.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static TSource Max(System::Collections::Generic::IEnumerable<TSource> ^ source);
public static TSource Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source);
static member Max : seq<'Source> -> 'Source
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource)) As TSource

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

戻り値

TSource TSource TSource TSource

シーケンスの最大値。The maximum value in the sequence.

例外

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>)のシーケンスの最大値を決定するIComparable<T>オブジェクト。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>) to determine the maximum value in a sequence of IComparable<T> objects.

/// <summary>
/// This class implements IComparable to be able to 
/// compare one Pet to another Pet.
/// </summary>
class Pet : IComparable<Pet>
{
    public string Name { get; set; }
    public int Age { get; set; }

    /// <summary>
    /// Compares this Pet to another Pet by 
    /// summing each Pet's age and name length.
    /// </summary>
    /// <param name="other">The Pet to compare this Pet to.</param>
    /// <returns>-1 if this Pet is 'less' than the other Pet, 
    /// 0 if they are equal,
    /// or 1 if this Pet is 'greater' than the other Pet.</returns>
    int IComparable<Pet>.CompareTo(Pet other)
    {
        int sumOther = other.Age + other.Name.Length;
        int sumThis = this.Age + this.Name.Length;

        if (sumOther > sumThis)
            return -1;
        else if (sumOther == sumThis)
            return 0;
        else
            return 1;
    }
}

public static void MaxEx3()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    Pet max = pets.Max();

    Console.WriteLine(
        "The 'maximum' animal is {0}.",
        max.Name);
}

/*
 This code produces the following output:

 The 'maximum' animal is Barley.
*/
' This class implements IComparable 
' and has a custom 'CompareTo' implementation.
Class Pet
    Implements IComparable(Of Pet)

    Public Name As String
    Public Age As Integer

    ''' <summary>
    ''' Compares Pet objects by the sum of their age and name length.
    ''' </summary>
    ''' <param name="other">The Pet to compare this Pet to.</param>
    ''' <returns>-1 if this Pet's sum is 'less' than the other Pet,
    ''' 0 if they are equal,
    ''' or 1 if this Pet's sum is 'greater' than the other Pet.</returns>
    Function CompareTo(ByVal other As Pet) As Integer _
    Implements IComparable(Of Pet).CompareTo

        If (other.Age + other.Name.Length > Me.Age + Me.Name.Length) Then
            Return -1
        ElseIf (other.Age + other.Name.Length = Me.Age + Me.Name.Length) Then
            Return 0
        Else
            Return 1
        End If
    End Function
End Class

Sub MaxEx3()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Find the "maximum" pet according to the 
    ' custom CompareTo() implementation.
    Dim max As Pet = pets.Max()

    ' Display the result.
    MsgBox("The 'maximum' animal is " & max.Name)
End Sub

' This code produces the following output:
'
' The 'maximum' animal is Barley

注釈

場合型TSource実装IComparable<T>Max<TSource>(IEnumerable<TSource>)メソッドでは、その実装を使用して、値を比較します。If type TSource implements IComparable<T>, the Max<TSource>(IEnumerable<TSource>) method uses that implementation to compare values. 場合は、型TSource実装IComparable、その実装を使用して値を比較します。Otherwise, if type TSource implements IComparable, that implementation is used to compare values.

場合TSourceは参照型であり、ソース シーケンスが空であるかは値のみが含まれますnull、このメソッドが戻るnullします。If TSource is a reference type and the source sequence is empty or contains only values that are null, this method returns null.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>)

シーケンスの各要素に対して変換関数を呼び出し、null 許容の Decimal の最大値を返します。Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Max(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<System::Decimal>> ^ selector);
public static Nullable<decimal> Max<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<decimal>> selector);
static member Max : seq<'Source> * Func<'Source, Nullable<decimal>> -> Nullable<decimal>
<Extension()>
Public Function Max(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Decimal))) As Nullable(Of Decimal)

型パラメーター

TSource

source の要素の型。The type of the elements of source.

パラメーター

source
IEnumerable<TSource>

最大値を確認する対象となる値のシーケンス。A sequence of values to determine the maximum value of.

selector
Func<TSource,Nullable<Decimal>>

各要素に適用する変換関数。A transform function to apply to each element.

戻り値

シーケンスの最大値に対応する Nullable<Decimal> 型 (C# の場合) または Nullable(Of Decimal) 型 (Visual Basic の場合) の値。The value of type Nullable<Decimal> in C# or Nullable(Of Decimal) in Visual Basic that corresponds to the maximum value in the sequence.

例外

source または selectornull です。source or selector is null.

次のコード例は、使用する方法を示しますMax<TSource>(IEnumerable<TSource>, Func<TSource,Int32>)射影された値のシーケンスの最大値を決定します。The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to determine the maximum value in a sequence of projected values.

注意

このコード例で使用するオーバーロードされたメソッドのオーバーロードは、このトピックで説明する特定のオーバーロードとは異なります。This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. コード例をこのトピックに適用するには、selector 関数の本体を変更します。To extend the example to this topic, change the body of the selector function.

class Pet
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void MaxEx4()
{
    Pet[] pets = { new Pet { Name="Barley", Age=8 },
                   new Pet { Name="Boots", Age=4 },
                   new Pet { Name="Whiskers", Age=1 } };

    int max = pets.Max(pet => pet.Age + pet.Name.Length);

    Console.WriteLine(
        "The maximum pet age plus name length is {0}.",
        max);
}

/*
 This code produces the following output:

 The maximum pet age plus name length is 14.
*/
Structure Pet
    Public Name As String
    Public Age As Integer
End Structure

Sub MaxEx4()
    ' Create an array of Pet objects.
    Dim pets() As Pet = {New Pet With {.Name = "Barley", .Age = 8},
                     New Pet With {.Name = "Boots", .Age = 4},
                     New Pet With {.Name = "Whiskers", .Age = 1}}

    ' Determine the "maximum" pet by passing a
    ' lambda expression to Max() that sums the pet's age
    ' and name length.
    Dim max As Integer = pets.Max(Function(pet) _
                                  pet.Age + pet.Name.Length)

    ' Display the result.
    MsgBox("The maximum pet age plus name length is " & max)
End Sub

' This code produces the following output:
'
' The maximum pet age plus name length is 14

注釈

Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>)メソッドは、Decimalの実装IComparable<T>値を比較します。The Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) method uses the Decimal implementation of IComparable<T> to compare values.

関数を提供する場合、このメソッドを任意の値のシーケンスに適用することができますselectorのメンバーを射影するsourceに数値型では、具体的にはNullable<Decimal>(C#) またはNullable(Of Decimal)Visual Basic でします。You can apply this method to a sequence of arbitrary values if you provide a function, selector, that projects the members of source into a numeric type, specifically Nullable<Decimal> in C# or Nullable(Of Decimal) in Visual Basic.

Visual Basic のクエリ式の構文、Aggregate Into Max()の呼び出しに変換句Maxします。In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

こちらもご覧ください

適用対象