ParallelEnumerable.Average Method

Reference

Definition

Namespace:: System.Linq

Assemblies:: System.Core.dll, System.Linq.Parallel.dll

Assemblies:: netstandard.dll, System.Linq.Parallel.dll

Assembly:: System.Linq.Parallel.dll

Assembly:: System.Core.dll

Assembly:: netstandard.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Computes in parallel the average of a sequence of values.

Overloads

Average(ParallelQuery<Single>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Int64>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Int32>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Double>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Single>>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Int64>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Int32>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Double>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Decimal>)	Computes in parallel the average of a sequence of values.
Average(ParallelQuery<Nullable<Decimal>>)	Computes in parallel the average of a sequence of values.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.
Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)	Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

Average(ParallelQuery<Single>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Single>

A sequence of values that are used to calculate an average.

Returns

Single

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Nullable<Int64>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Nullable<Int64>>

A sequence of values that are used to calculate an average.

Returns

Nullable<Double>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Nullable<Int32>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Nullable<Int32>>

A sequence of values that are used to calculate an average.

Returns

Nullable<Double>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Nullable<Double>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Nullable<Double>>

The source sequence.

Returns

Nullable<Double>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is null.

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Nullable<Single>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Nullable<Single>>

A sequence of values that are used to calculate an average.

Returns

Nullable<Single>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Int64>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Int64>

A sequence of values that are used to calculate an average.

Returns

Double

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Int32>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Int32>

A sequence of values that are used to calculate an average.

Returns

Double

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Double>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Double>

A sequence of values that are used to calculate an average.

Returns

Double

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Decimal>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Decimal>

A sequence of values that are used to calculate an average.

Returns

Decimal

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average(ParallelQuery<Nullable<Decimal>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values.

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

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

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

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

Parameters

source: ParallelQuery<Nullable<Decimal>>

A sequence of values that are used to calculate an average.

Returns

Nullable<Decimal>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

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

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Single>

A transform function to apply to each element.

Returns

Single

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

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

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Nullable<Int64>>

A transform function to apply to each element.

Returns

Nullable<Double>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int64.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

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

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Nullable<Int32>>

A transform function to apply to each element.

Returns

Nullable<Double>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Double>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

public static double? Average<TSource>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,double?> selector);

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Nullable<Double>>

A transform function to apply to each element.

Returns

Nullable<Double>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Single>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

public static float? Average<TSource>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,float?> selector);

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Nullable<Single>>

A transform function to apply to each element.

Returns

Nullable<Single>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Int64>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

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

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Int64>

A transform function to apply to each element.

Returns

Double

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Int32>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

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

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Int32>

A transform function to apply to each element.

Returns

Double

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

The sum or count of the elements in the sequence is larger than Int32.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Double>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

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

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Double>

A transform function to apply to each element.

Returns

Double

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Decimal>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

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

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Decimal>

A transform function to apply to each element.

Returns

Decimal

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Decimal>>)

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Source:: ParallelEnumerable.cs

Computes in parallel the average of a sequence of values that are obtained by invoking a transform function on each element of the input sequence.

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

public static decimal? Average<TSource>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,decimal?> selector);

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source: ParallelQuery<TSource>

A sequence of values that are used to calculate an average.

selector: Func<TSource,Nullable<Decimal>>

A transform function to apply to each element.

Returns

Nullable<Decimal>

The average of the sequence of values.

Exceptions

OperationCanceledException

The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).

ArgumentNullException

source or selector is a null reference (Nothing in Visual Basic).

AggregateException

One or more exceptions occurred during the evaluation of the query.

InvalidOperationException

source contains no elements.

OverflowException

(Thrown as inner exception in an AggregateException). The selector function returns a value greater than MaxValue for the element type.

Applies to

.NET 10 and other versions

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

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ParallelEnumerable.Average Method

Definition

Overloads

Average(ParallelQuery<Single>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Nullable<Int64>>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Nullable<Int32>>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Nullable<Double>>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Nullable<Single>>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Int64>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Int32>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Double>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Decimal>)

Parameters

Returns

Exceptions

See also

Applies to

Average(ParallelQuery<Nullable<Decimal>>)

Parameters

Returns

Exceptions

See also

Applies to

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Single>)

Type Parameters

Parameters

Returns

Exceptions

See also

Applies to

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int64>>)

Type Parameters

Parameters

Returns

Exceptions

See also

Applies to

Average<TSource>(ParallelQuery<TSource>, Func<TSource,Nullable<Int32>>)

Type Parameters