Enumerable.Average Método

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

Parâmetros

Retornos

Single

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Int32>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros

Retornos

Nullable<Single>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Nullable<Int64>>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros

Retornos

Nullable<Double>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Nullable<Int64>>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros

Retornos

Nullable<Double>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Nullable<Int64>>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros

Retornos

Nullable<Double>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Nullable<Int64>>) o para calcular uma média.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

Comentários

Se a soma dos elementos for muito grande para representar como um Double , esse método retornará infinito positivo ou negativo.If the sum of the elements is too large to represent as a Double, this method returns positive or negative infinity.

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros

Retornos

Double

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Int32>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros

Retornos

Double

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Int32>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros

Retornos

Double

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Int32>) o para calcular uma média.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

Comentários

Se a soma dos elementos for muito grande para representar como um Double , esse método retornará infinito positivo ou negativo.If the sum of the elements is too large to represent as a Double, this method returns positive or negative infinity.

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros

Retornos

Decimal

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Int32>) o para calcular a média de uma sequência de valores.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros

Retornos

Nullable<Decimal>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average(IEnumerable<Nullable<Int64>>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros de tipo

Parâmetros

Retornos

Nullable<Double>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros de tipo

Parâmetros

Retornos

Single

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros de tipo

Parâmetros

Retornos

Nullable<Single>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros de tipo

Parâmetros

Retornos

Nullable<Double>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros de tipo

Parâmetros

Retornos

Nullable<Double>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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)

Parâmetros de tipo

Parâmetros

Retornos

Nullable<Decimal>

A média da sequência de valores ou null, se a sequência de origem estiver vazia ou contiver somente valores que são null.The average of the sequence of values, or null if the source sequence is empty or contains only values that are null.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros de tipo

Parâmetros

Retornos

Double

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros de tipo

Parâmetros

Retornos

Double

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros de tipo

Parâmetros

Retornos

Double

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (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

Parâmetros de tipo

Parâmetros

Retornos

Decimal

A média da sequência de valores.The average of the sequence of values.

Exceções

Exemplos

O exemplo de código a seguir demonstra como usar Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) o para calcular uma média.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

Comentários

Em Visual Basic sintaxe de expressão de consulta, uma Aggregate Into Average() cláusula se traduz em uma invocação de Average .In Visual Basic query expression syntax, an Aggregate Into Average() clause translates to an invocation of Average.

Confira também

• Cláusula Aggregate (Visual Basic)Aggregate Clause (Visual Basic)