Queryable.Average Método

public:
[System::Runtime::CompilerServices::Extension]
 static float Average(System::Linq::IQueryable<float> ^ source);

public static float Average (this System.Linq.IQueryable<float> source);

static member Average : System.Linq.IQueryable<single> -> single

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

Parámetros

Devoluciones

Single

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Int32>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Int32>) to calculate the average of a sequence of values.

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

double average = grades.AsQueryable().Average();

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

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

Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

Dim average As Double = grades.AsQueryable().Average()

MsgBox(String.Format("The average grade is {0}.", average))

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

Comentarios

El Average(IQueryable<Single>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Single>) sí mismo.The Average(IQueryable<Single>) method generates a MethodCallExpression that represents calling Average(IQueryable<Single>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Single>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Single>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Average(System::Linq::IQueryable<Nullable<float>> ^ source);

public static float? Average (this System.Linq.IQueryable<Nullable<float>> source);

static member Average : System.Linq.IQueryable<Nullable<single>> -> Nullable<single>

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

Parámetros

Devoluciones

Nullable<Single>

Promedio de la secuencia de valores o null si la secuencia de origen está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Nullable<Int64>>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Nullable<Int64>>) to calculate the average of a sequence of values.

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

double? average = longs.AsQueryable().Average();

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

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

Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

Dim average As Nullable(Of Double) = longs.AsQueryable().Average()

MsgBox(String.Format("The average is {0}.", average))

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

Comentarios

El Average(IQueryable<Nullable<Single>>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Nullable<Single>>) sí mismo.The Average(IQueryable<Nullable<Single>>) method generates a MethodCallExpression that represents calling Average(IQueryable<Nullable<Single>>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Nullable<Single>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Nullable<Single>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

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

public static double? Average (this System.Linq.IQueryable<Nullable<long>> source);

static member Average : System.Linq.IQueryable<Nullable<int64>> -> Nullable<double>

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

Parámetros

Devoluciones

Nullable<Double>

Promedio de la secuencia de valores o null si la secuencia de origen está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Nullable<Int64>>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Nullable<Int64>>) to calculate the average of a sequence of values.

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

double? average = longs.AsQueryable().Average();

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

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

Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

Dim average As Nullable(Of Double) = longs.AsQueryable().Average()

MsgBox(String.Format("The average is {0}.", average))

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

Comentarios

El Average(IQueryable<Nullable<Int64>>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Nullable<Int64>>) sí mismo.The Average(IQueryable<Nullable<Int64>>) method generates a MethodCallExpression that represents calling Average(IQueryable<Nullable<Int64>>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Nullable<Int64>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Nullable<Int64>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Linq::IQueryable<Nullable<double>> ^ source);

public static double? Average (this System.Linq.IQueryable<Nullable<double>> source);

static member Average : System.Linq.IQueryable<Nullable<double>> -> Nullable<double>

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

Parámetros

Devoluciones

Nullable<Double>

Promedio de la secuencia de valores o null si la secuencia de origen está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Nullable<Int64>>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Nullable<Int64>>) to calculate the average of a sequence of values.

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

double? average = longs.AsQueryable().Average();

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

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

Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

Dim average As Nullable(Of Double) = longs.AsQueryable().Average()

MsgBox(String.Format("The average is {0}.", average))

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

Comentarios

El Average(IQueryable<Nullable<Double>>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Nullable<Double>>) sí mismo.The Average(IQueryable<Nullable<Double>>) method generates a MethodCallExpression that represents calling Average(IQueryable<Nullable<Double>>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Nullable<Double>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Nullable<Double>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

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

public static double? Average (this System.Linq.IQueryable<Nullable<int>> source);

static member Average : System.Linq.IQueryable<Nullable<int>> -> Nullable<double>

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

Parámetros

Devoluciones

Nullable<Double>

Promedio de la secuencia de valores o null si la secuencia de origen está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Nullable<Int64>>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Nullable<Int64>>) to calculate the average of a sequence of values.

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

double? average = longs.AsQueryable().Average();

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

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

Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

Dim average As Nullable(Of Double) = longs.AsQueryable().Average()

MsgBox(String.Format("The average is {0}.", average))

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

Comentarios

El Average(IQueryable<Nullable<Int32>>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Nullable<Int32>>) sí mismo.The Average(IQueryable<Nullable<Int32>>) method generates a MethodCallExpression that represents calling Average(IQueryable<Nullable<Int32>>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Nullable<Int32>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Nullable<Int32>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Linq::IQueryable<long> ^ source);

public static double Average (this System.Linq.IQueryable<long> source);

static member Average : System.Linq.IQueryable<int64> -> double

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

Parámetros

Devoluciones

Double

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Int32>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Int32>) to calculate the average of a sequence of values.

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

double average = grades.AsQueryable().Average();

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

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

Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

Dim average As Double = grades.AsQueryable().Average()

MsgBox(String.Format("The average grade is {0}.", average))

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

Comentarios

El Average(IQueryable<Int64>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Int64>) sí mismo.The Average(IQueryable<Int64>) method generates a MethodCallExpression that represents calling Average(IQueryable<Int64>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Int64>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Int64>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Linq::IQueryable<int> ^ source);

public static double Average (this System.Linq.IQueryable<int> source);

static member Average : System.Linq.IQueryable<int> -> double

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

Parámetros

Devoluciones

Double

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Int32>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Int32>) to calculate the average of a sequence of values.

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

double average = grades.AsQueryable().Average();

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

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

Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

Dim average As Double = grades.AsQueryable().Average()

MsgBox(String.Format("The average grade is {0}.", average))

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

Comentarios

El Average(IQueryable<Int32>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Int32>) sí mismo.The Average(IQueryable<Int32>) method generates a MethodCallExpression that represents calling Average(IQueryable<Int32>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Int32>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Int32>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Linq::IQueryable<double> ^ source);

public static double Average (this System.Linq.IQueryable<double> source);

static member Average : System.Linq.IQueryable<double> -> double

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

Parámetros

Devoluciones

Double

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Int32>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Int32>) to calculate the average of a sequence of values.

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

double average = grades.AsQueryable().Average();

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

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

Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

Dim average As Double = grades.AsQueryable().Average()

MsgBox(String.Format("The average grade is {0}.", average))

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

Comentarios

El Average(IQueryable<Double>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Double>) sí mismo.The Average(IQueryable<Double>) method generates a MethodCallExpression that represents calling Average(IQueryable<Double>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Double>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Double>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Average(System::Linq::IQueryable<System::Decimal> ^ source);

public static decimal Average (this System.Linq.IQueryable<decimal> source);

static member Average : System.Linq.IQueryable<decimal> -> decimal

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

Parámetros

Devoluciones

Decimal

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Int32>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Int32>) to calculate the average of a sequence of values.

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

double average = grades.AsQueryable().Average();

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

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

Dim grades As New List(Of Integer)(New Integer() {78, 92, 100, 37, 81})

Dim average As Double = grades.AsQueryable().Average()

MsgBox(String.Format("The average grade is {0}.", average))

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

Comentarios

El Average(IQueryable<Decimal>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Decimal>) sí mismo.The Average(IQueryable<Decimal>) method generates a MethodCallExpression that represents calling Average(IQueryable<Decimal>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Decimal>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Decimal>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Average(System::Linq::IQueryable<Nullable<System::Decimal>> ^ source);

public static decimal? Average (this System.Linq.IQueryable<Nullable<decimal>> source);

static member Average : System.Linq.IQueryable<Nullable<decimal>> -> Nullable<decimal>

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

Parámetros

Devoluciones

Nullable<Decimal>

Promedio de la secuencia de valores o null si la secuencia de origen está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar Average(IQueryable<Nullable<Int64>>) para calcular el promedio de una secuencia de valores.The following code example demonstrates how to use Average(IQueryable<Nullable<Int64>>) to calculate the average of a sequence of values.

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

double? average = longs.AsQueryable().Average();

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

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

Dim longs() As Nullable(Of Long) = {Nothing, 10007L, 37L, 399846234235L}

Dim average As Nullable(Of Double) = longs.AsQueryable().Average()

MsgBox(String.Format("The average is {0}.", average))

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

Comentarios

El Average(IQueryable<Nullable<Decimal>>) método genera un MethodCallExpression que representa la llamada a Average(IQueryable<Nullable<Decimal>>) sí mismo.The Average(IQueryable<Nullable<Decimal>>) method generates a MethodCallExpression that represents calling Average(IQueryable<Nullable<Decimal>>) itself. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average(IQueryable<Nullable<Decimal>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average(IQueryable<Nullable<Decimal>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de source .The expected behavior is that it calculates the average of the values in source.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static float Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, float> ^> ^ selector);

public static float Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,float>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, single>> -> single

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

Parámetros de tipo

Parámetros

Devoluciones

Single

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<float> Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, Nullable<float>> ^> ^ selector);

public static float? Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,Nullable<float>>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<single>>> -> Nullable<single>

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

Parámetros de tipo

Parámetros

Devoluciones

Nullable<Single>

Promedio de la secuencia de valores o null si la secuencia source está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de la IQueryProvider propiedad representada por Provider del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, Nullable<long>> ^> ^ selector);

public static double? Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,Nullable<long>>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<int64>>> -> Nullable<double>

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

Parámetros de tipo

Parámetros

Devoluciones

Nullable<Double>

Promedio de la secuencia de valores o null si la secuencia source está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, Nullable<int>> ^> ^ selector);

public static double? Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,Nullable<int>>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<int>>> -> Nullable<double>

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

Parámetros de tipo

Parámetros

Devoluciones

Nullable<Double>

Promedio de la secuencia de valores o null si la secuencia source está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de la IQueryProvider propiedad representada por Provider del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<double> Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, Nullable<double>> ^> ^ selector);

public static double? Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,Nullable<double>>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<double>>> -> Nullable<double>

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

Parámetros de tipo

Parámetros

Devoluciones

Nullable<Double>

Promedio de la secuencia de valores o null si la secuencia source está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, long> ^> ^ selector);

public static double Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,long>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, int64>> -> double

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

Parámetros de tipo

Parámetros

Devoluciones

Double

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, int> ^> ^ selector);

public static double Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,int>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, int>> -> double

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

Parámetros de tipo

Parámetros

Devoluciones

Double

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static double Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, double> ^> ^ selector);

public static double Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,double>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, double>> -> double

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

Parámetros de tipo

Parámetros

Devoluciones

Double

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static System::Decimal Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, System::Decimal> ^> ^ selector);

public static decimal Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,decimal>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, decimal>> -> decimal

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

Parámetros de tipo

Parámetros

Devoluciones

Decimal

El promedio de la secuencia de valores.The average of the sequence of values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.

public:
generic <typename TSource>
[System::Runtime::CompilerServices::Extension]
 static Nullable<System::Decimal> Average(System::Linq::IQueryable<TSource> ^ source, System::Linq::Expressions::Expression<Func<TSource, Nullable<System::Decimal>> ^> ^ selector);

public static decimal? Average<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,Nullable<decimal>>> selector);

static member Average : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<decimal>>> -> Nullable<decimal>

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

Parámetros de tipo

Parámetros

Devoluciones

Nullable<Decimal>

Promedio de la secuencia de valores o null si la secuencia source está vacía o contiene solo valores null.The average of the sequence of values, or null if the source sequence is empty or contains only null values.

Excepciones

Ejemplos

En el ejemplo de código siguiente se muestra cómo utilizar Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) para calcular la String longitud media en una secuencia de valores de tipo String .The following code example demonstrates how to use Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>) to calculate the average String length in a sequence of values of type String.

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

// Determine the average string length in the array.
double average = fruits.AsQueryable().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.

Dim fruits() As String = {"apple", "banana", "mango", "orange", "passionfruit", "grape"}

' Determine the average string length in the array.
Dim average As Double = fruits.AsQueryable().Average(Function(s) s.Length)

MsgBox(String.Format("The average string length is {0}.", average))

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

Comentarios

Este método tiene al menos un parámetro de tipo Expression<TDelegate> cuyo argumento de tipo es uno de los Func<T,TResult> tipos.This method has at least one parameter of type Expression<TDelegate> whose type argument is one of the Func<T,TResult> types. Para estos parámetros, puede pasar una expresión lambda y se compilará en un Expression<TDelegate> .For these parameters, you can pass in a lambda expression and it will be compiled to an Expression<TDelegate>.

El Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>) método genera un MethodCallExpression que representa la llamada a Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>) sí mismo como un método genérico construido.The Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>) method generates a MethodCallExpression that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>) itself as a constructed generic method. A continuación, pasa el MethodCallExpression al Execute<TResult>(Expression) método de IQueryProvider representado por la Provider propiedad del source parámetro.It then passes the MethodCallExpression to the Execute<TResult>(Expression) method of the IQueryProvider represented by the Provider property of the source parameter.

El comportamiento de la consulta que se produce como resultado de ejecutar un árbol de expresión que representa Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>) la llamada depende de la implementación del tipo del source parámetro.The query behavior that occurs as a result of executing an expression tree that represents calling Average<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>) depends on the implementation of the type of the source parameter. El comportamiento esperado es que calcule el promedio de los valores de después de source invocar selector en cada valor.The expected behavior is that it calculates the average of the values in source after invoking selector on each value.