ParallelEnumerable.Sum Method

Definition

Computes in parallel the sum of a sequence of values.

Overloads

Sum(ParallelQuery<Nullable<Single>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Int64>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Int32>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Double>>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Single>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Int64>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Int32>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Double>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Decimal>)

Computes in parallel the sum of a sequence of values.

Sum(ParallelQuery<Nullable<Decimal>>)

Computes in parallel the sum of a sequence of values.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Sum(ParallelQuery<Nullable<Single>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static float? Sum(this System.Linq.ParallelQuery<float?> source);

Parameters

source
ParallelQuery<Nullable<Single>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Nullable<Int64>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static long? Sum(this System.Linq.ParallelQuery<long?> source);

Parameters

source
ParallelQuery<Nullable<Int64>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Nullable<Int32>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static int? Sum(this System.Linq.ParallelQuery<int?> source);

Parameters

source
ParallelQuery<Nullable<Int32>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Nullable<Double>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static double? Sum(this System.Linq.ParallelQuery<double?> source);

Parameters

source
ParallelQuery<Nullable<Double>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Single>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static float Sum(this System.Linq.ParallelQuery<float> source);

Parameters

source
ParallelQuery<Single>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Int64>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static long Sum(this System.Linq.ParallelQuery<long> source);

Parameters

source
ParallelQuery<Int64>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Int32>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static int Sum(this System.Linq.ParallelQuery<int> source);

Parameters

source
ParallelQuery<Int32>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Double>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static double Sum(this System.Linq.ParallelQuery<double> source);

Parameters

source
ParallelQuery<Double>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Decimal>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static decimal Sum(this System.Linq.ParallelQuery<decimal> source);

Parameters

source
ParallelQuery<Decimal>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

Sum(ParallelQuery<Nullable<Decimal>>)

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

Computes in parallel the sum of a sequence of values.

C#
public static decimal? Sum(this System.Linq.ParallelQuery<decimal?> source);

Parameters

source
ParallelQuery<Nullable<Decimal>>

A sequence of values to calculate the sum of.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Single>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Decimal>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Double>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

C#
public static int Sum<TSource>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,int> selector);

Type Parameters

TSource

The type of elements in the source sequence.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Int32>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

C#
public static long Sum<TSource>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,long> selector);

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Int64>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Decimal>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Decimal.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Double>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Double.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

C#
public static int? Sum<TSource>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,int?> selector);

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Int32>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

C#
public static long? Sum<TSource>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,long?> selector);

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Int64>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

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

See also

Applies to

.NET 9 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
.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

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

Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs
Source:
ParallelEnumerable.cs

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

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

Type Parameters

TSource

The type of elements of source.

Parameters

source
ParallelQuery<TSource>

A sequence of values to calculate the sum of.

selector
Func<TSource,Nullable<Single>>

A transform function to apply to each element.

Returns

The sum of the projected values in the sequence.

Exceptions

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

The sum is larger than Single.MaxValue. -or- One or more exceptions occurred during the evaluation of the query.

See also

Applies to

.NET 9 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
.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