Enumerable.Average Methode

public:
[System::Runtime::CompilerServices::Extension]
 static float Average(System::Collections::Generic::IEnumerable<float> ^ source);

public static float Average (this System.Collections.Generic.IEnumerable<float> source);

static member Average : seq<single> -> single

<Extension()>
Public Function Average (source As IEnumerable(Of Single)) As Single

Parameter

Gibt zurück

Single

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

double average = grades.Average();

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.

' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
Console.WriteLine($"The average grade is {avg}")

' This code produces the following output:
'
' The average grade is 77.6

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Average(System::Collections::Generic::IEnumerable<Nullable<float>> ^ source);

public static float? Average (this System.Collections.Generic.IEnumerable<Nullable<float>> source);

static member Average : seq<Nullable<single>> -> Nullable<single>

<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Single))) As Nullable(Of Single)

Parameter

Gibt zurück

Nullable<Single>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Nullable<Int64>>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.

' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 133282081426.333

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Collections::Generic::IEnumerable<Nullable<long>> ^ source);

public static double? Average (this System.Collections.Generic.IEnumerable<Nullable<long>> source);

static member Average : seq<Nullable<int64>> -> Nullable<double>

<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Long))) As Nullable(Of Double)

Parameter

Gibt zurück

Nullable<Double>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Nullable<Int64>>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.

' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 133282081426.333

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Collections::Generic::IEnumerable<Nullable<int>> ^ source);

public static double? Average (this System.Collections.Generic.IEnumerable<Nullable<int>> source);

static member Average : seq<Nullable<int>> -> Nullable<double>

<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Integer))) As Nullable(Of Double)

Parameter

Gibt zurück

Nullable<Double>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Nullable<Int64>>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.

' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 133282081426.333

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Collections::Generic::IEnumerable<Nullable<double>> ^ source);

public static double? Average (this System.Collections.Generic.IEnumerable<Nullable<double>> source);

static member Average : seq<Nullable<double>> -> Nullable<double>

<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Double))) As Nullable(Of Double)

Parameter

Gibt zurück

Nullable<Double>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Nullable<Int64>>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.

' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 133282081426.333

Hinweise

Wenn die Summe der Elemente zu groß ist, um als darzustellen Double , gibt diese Methode positive oder negative unendlich zurück.If the sum of the elements is too large to represent as a Double, this method returns positive or negative infinity.

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Collections::Generic::IEnumerable<long> ^ source);

public static double Average (this System.Collections.Generic.IEnumerable<long> source);

static member Average : seq<int64> -> double

<Extension()>
Public Function Average (source As IEnumerable(Of Long)) As Double

Parameter

Gibt zurück

Double

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

double average = grades.Average();

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.

' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
Console.WriteLine($"The average grade is {avg}")

' This code produces the following output:
'
' The average grade is 77.6

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Collections::Generic::IEnumerable<int> ^ source);

public static double Average (this System.Collections.Generic.IEnumerable<int> source);

static member Average : seq<int> -> double

<Extension()>
Public Function Average (source As IEnumerable(Of Integer)) As Double

Parameter

Gibt zurück

Double

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

double average = grades.Average();

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.

' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
Console.WriteLine($"The average grade is {avg}")

' This code produces the following output:
'
' The average grade is 77.6

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Collections::Generic::IEnumerable<double> ^ source);

public static double Average (this System.Collections.Generic.IEnumerable<double> source);

static member Average : seq<double> -> double

<Extension()>
Public Function Average (source As IEnumerable(Of Double)) As Double

Parameter

Gibt zurück

Double

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate an average.

List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

double average = grades.Average();

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.

' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
Console.WriteLine($"The average grade is {avg}")

' This code produces the following output:
'
' The average grade is 77.6

Hinweise

Wenn die Summe der Elemente zu groß ist, um als darzustellen Double , gibt diese Methode positive oder negative unendlich zurück.If the sum of the elements is too large to represent as a Double, this method returns positive or negative infinity.

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Average(System::Collections::Generic::IEnumerable<System::Decimal> ^ source);

public static decimal Average (this System.Collections.Generic.IEnumerable<decimal> source);

static member Average : seq<decimal> -> decimal

<Extension()>
Public Function Average (source As IEnumerable(Of Decimal)) As Decimal

Parameter

Gibt zurück

Decimal

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Int32>) um den Durchschnitt einer Sequenz von-Werten zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Int32>) to calculate the average of a sequence of values.

List<int> grades = new List<int> { 78, 92, 100, 37, 81 };

double average = grades.Average();

Console.WriteLine("The average grade is {0}.", average);

// This code produces the following output:
//
// The average grade is 77.6.

' Create a list of integers.
Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

' Determine the average value in the list.
Dim avg As Double = grades.Average()

' Display the output.
Console.WriteLine($"The average grade is {avg}")

' This code produces the following output:
'
' The average grade is 77.6

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Average(System::Collections::Generic::IEnumerable<Nullable<System::Decimal>> ^ source);

public static decimal? Average (this System.Collections.Generic.IEnumerable<Nullable<decimal>> source);

static member Average : seq<Nullable<decimal>> -> Nullable<decimal>

<Extension()>
Public Function Average (source As IEnumerable(Of Nullable(Of Decimal))) As Nullable(Of Decimal)

Parameter

Gibt zurück

Nullable<Decimal>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average(IEnumerable<Nullable<Int64>>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average(IEnumerable<Nullable<Int64>>) to calculate an average.

long?[] longs = { null, 10007L, 37L, 399846234235L };

double? average = longs.Average();

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 133282081426.333.

' Create an array of nullable long values.
Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

' Determine the average value in the array.
Dim avg As Nullable(Of Double) = longs.Average()

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 133282081426.333

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<int>> ^ selector);

public static double? Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<int>> selector);

static member Average : seq<'Source> * Func<'Source, Nullable<int>> -> Nullable<double>

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Integer))) As Nullable(Of Double)

Typparameter

Parameter

Gibt zurück

Nullable<Double>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.

' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
Console.WriteLine($"The average string length is {avg}")

' This code produces the following output:
'
' The average string length is 6.5

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static float Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, float> ^ selector);

public static float Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,float> selector);

static member Average : seq<'Source> * Func<'Source, single> -> single

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Single)) As Single

Typparameter

Parameter

Gibt zurück

Single

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.

' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
Console.WriteLine($"The average string length is {avg}")

' This code produces the following output:
'
' The average string length is 6.5

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<float>> ^ selector);

public static float? Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<float>> selector);

static member Average : seq<'Source> * Func<'Source, Nullable<single>> -> Nullable<single>

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Single))) As Nullable(Of Single)

Typparameter

Parameter

Gibt zurück

Nullable<Single>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.

' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
Console.WriteLine($"The average string length is {avg}")

' This code produces the following output:
'
' The average string length is 6.5

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<long>> ^ selector);

public static double? Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<long>> selector);

static member Average : seq<'Source> * Func<'Source, Nullable<int64>> -> Nullable<double>

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Long))) As Nullable(Of Double)

Typparameter

Parameter

Gibt zurück

Nullable<Double>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.

' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 99948748093

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<double>> ^ selector);

public static double? Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<double>> selector);

static member Average : seq<'Source> * Func<'Source, Nullable<double>> -> Nullable<double>

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Double))) As Nullable(Of Double)

Typparameter

Parameter

Gibt zurück

Nullable<Double>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.

' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 99948748093

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, Nullable<System::Decimal>> ^ selector);

public static decimal? Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,Nullable<decimal>> selector);

static member Average : seq<'Source> * Func<'Source, Nullable<decimal>> -> Nullable<decimal>

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Nullable(Of Decimal))) As Nullable(Of Decimal)

Typparameter

Parameter

Gibt zurück

Nullable<Decimal>

Der Durchschnitt der Sequenz von Werten, oder null, wenn die Quellsequenz leer ist oder nur Werte enthält, die null sind.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.

' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 99948748093

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, long> ^ selector);

public static double Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,long> selector);

static member Average : seq<'Source> * Func<'Source, int64> -> double

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Long)) As Double

Typparameter

Parameter

Gibt zurück

Double

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.

' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 99948748093

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, int> ^ selector);

public static double Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,int> selector);

static member Average : seq<'Source> * Func<'Source, int> -> double

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Integer)) As Double

Typparameter

Parameter

Gibt zurück

Double

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) to calculate an average.

string[] fruits = { "apple", "banana", "mango", "orange", "passionfruit", "grape" };

double average = fruits.Average(s => s.Length);

Console.WriteLine("The average string length is {0}.", average);

// This code produces the following output:
//
// The average string length is 6.5.

' Create an array of strings.
Dim fruits() As String =
{"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average length of the strings in the array.
Dim avg As Double = fruits.Average(Function(s) s.Length)

' Display the output.
Console.WriteLine($"The average string length is {avg}")

' This code produces the following output:
'
' The average string length is 6.5

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, double> ^ selector);

public static double Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,double> selector);

static member Average : seq<'Source> * Func<'Source, double> -> double

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Double)) As Double

Typparameter

Parameter

Gibt zurück

Double

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.

' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 99948748093

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Average(System::Collections::Generic::IEnumerable<TSource> ^ source, Func<TSource, System::Decimal> ^ selector);

public static decimal Average<TSource> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,decimal> selector);

static member Average : seq<'Source> * Func<'Source, decimal> -> decimal

<Extension()>
Public Function Average(Of TSource) (source As IEnumerable(Of TSource), selector As Func(Of TSource, Decimal)) As Decimal

Typparameter

Parameter

Gibt zurück

Decimal

Der Durchschnitt der Sequenz von Werten.The average of the sequence of values.

Ausnahmen

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie verwendet wird, Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) um einen Durchschnitt zu berechnen.The following code example demonstrates how to use Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) to calculate an average.

string[] numbers = { "10007", "37", "299846234235" };

double average = numbers.Average(num => Convert.ToInt64(num));

Console.WriteLine("The average is {0}.", average);

// This code produces the following output:
//
// The average is 99948748093.

' Create an array of strings.
Dim numbers() As String = {"10007", "37", "299846234235"}

' Determine the average number after converting each
' string to an Int64 value.
Dim avg As Double =
numbers.Average(Function(number) Convert.ToInt64(number))

' Display the output.
Console.WriteLine($"The average is {avg}")

' This code produces the following output:
'
' The average is 99948748093

Hinweise

In Visual Basic Abfrage Ausdruckssyntax übersetzt eine- Aggregate Into Average() Klausel in einen Aufruf von Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Weitere Informationen

• Aggregate-Klausel (Visual Basic)Aggregate Clause (Visual Basic)