EntityFrameworkQueryableExtensions.SumAsync Method

Definition

Overloads

SumAsync(IQueryable<Nullable<Int64>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Single>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Nullable<Int32>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Nullable<Double>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Nullable<Single>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Int64>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Int32>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Double>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Decimal>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync(IQueryable<Nullable<Decimal>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

SumAsync(IQueryable<Nullable<Int64>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<long?> SumAsync (this System.Linq.IQueryable<long?> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<Nullable<int64>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<int64>>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Nullable(Of Long)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Long))

Parameters

source
IQueryable<Nullable<Int64>>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Int64>>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Single>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<float> SumAsync (this System.Linq.IQueryable<float> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<single> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<single>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Single), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Single)

Parameters

source
IQueryable<Single>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Single>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Nullable<Int32>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<int?> SumAsync (this System.Linq.IQueryable<int?> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<Nullable<int>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<int>>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Nullable(Of Integer)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Integer))

Parameters

source
IQueryable<Nullable<Int32>>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Int32>>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Nullable<Double>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<double?> SumAsync (this System.Linq.IQueryable<double?> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<Nullable<double>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<double>>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Nullable(Of Double)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Double))

Parameters

source
IQueryable<Nullable<Double>>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Double>>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Nullable<Single>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<float?> SumAsync (this System.Linq.IQueryable<float?> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<Nullable<single>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<single>>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Nullable(Of Single)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Single))

Parameters

source
IQueryable<Nullable<Single>>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Single>>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Int64>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<long> SumAsync (this System.Linq.IQueryable<long> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<int64>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Long), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Long)

Parameters

source
IQueryable<Int64>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Int64>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Int32>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<int> SumAsync (this System.Linq.IQueryable<int> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<int> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<int>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Integer), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Integer)

Parameters

source
IQueryable<Int32>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Int32>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Double>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<double> SumAsync (this System.Linq.IQueryable<double> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<double> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<double>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Double), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Double)

Parameters

source
IQueryable<Double>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Double>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Decimal>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<decimal> SumAsync (this System.Linq.IQueryable<decimal> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<decimal> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<decimal>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Decimal), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Decimal)

Parameters

source
IQueryable<Decimal>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Decimal>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync(IQueryable<Nullable<Decimal>>, CancellationToken)

Asynchronously computes the sum of a sequence of values.

public static System.Threading.Tasks.Task<decimal?> SumAsync (this System.Linq.IQueryable<decimal?> source, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<Nullable<decimal>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<decimal>>
<Extension()>
Public Function SumAsync (source As IQueryable(Of Nullable(Of Decimal)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Decimal))

Parameters

source
IQueryable<Nullable<Decimal>>

A sequence of values to calculate the sum of.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Decimal>>

A task that represents the asynchronous operation. The task result contains the sum of the values in the sequence.

Exceptions

source is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Single>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<float> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,float>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, single>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<single>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Single)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Single)

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Single>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Single>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Single>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<float?> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,float?>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<single>>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<single>>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Nullable(Of Single))), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Single))

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Nullable<Single>>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Single>>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int32>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<int?> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,int?>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<int>>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<int>>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Nullable(Of Integer))), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Integer))

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Nullable<Int32>>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Int32>>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Double>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<double?> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,double?>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<double>>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<double>>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Nullable(Of Double))), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Double))

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Nullable<Double>>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Double>>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Int64>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<long?> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,long?>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<int64>>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<int64>>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Nullable(Of Long))), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Long))

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Nullable<Int64>>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Int64>>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int64>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<long> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,long>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, int64>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<int64>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Long)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Long)

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Int64>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Int64>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Int32>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<int> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,int>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, int>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<int>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Integer)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Integer)

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Int32>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Int32>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Double>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<double> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,double>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, double>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<double>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Double)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Double)

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Double>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Double>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Decimal>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<decimal> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,decimal>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, decimal>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<decimal>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Decimal)), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Decimal)

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Decimal>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Decimal>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to

SumAsync<TSource>(IQueryable<TSource>, Expression<Func<TSource,Nullable<Decimal>>>, CancellationToken)

Asynchronously computes the sum of the sequence of values that is obtained by invoking a projection function on each element of the input sequence.

public static System.Threading.Tasks.Task<decimal?> SumAsync<TSource> (this System.Linq.IQueryable<TSource> source, System.Linq.Expressions.Expression<Func<TSource,decimal?>> selector, System.Threading.CancellationToken cancellationToken = default);
static member SumAsync : System.Linq.IQueryable<'Source> * System.Linq.Expressions.Expression<Func<'Source, Nullable<decimal>>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Nullable<decimal>>
<Extension()>
Public Function SumAsync(Of TSource) (source As IQueryable(Of TSource), selector As Expression(Of Func(Of TSource, Nullable(Of Decimal))), Optional cancellationToken As CancellationToken = Nothing) As Task(Of Nullable(Of Decimal))

Type Parameters

TSource

Parameters

source
IQueryable<TSource>

A sequence of values of type TSource.

selector
Expression<Func<TSource,Nullable<Decimal>>>

A projection function to apply to each element.

cancellationToken
CancellationToken

A CancellationToken to observe while waiting for the task to complete.

Returns

Task<Nullable<Decimal>>

A task that represents the asynchronous operation. The task result contains the sum of the projected values..

Exceptions

source or selector is null.

Remarks

Multiple active operations on the same context instance are not supported. Use await to ensure that any asynchronous operations have completed before calling another method on this context. See Avoiding DbContext threading issues for more information.

See Querying data with EF Core for more information.

Applies to