QueryableExtensionMethodsSingleOrDefaultAsyncTSource Method (IQueryableTSource, ExpressionFuncTSource, Boolean, TSource)

Async variant of Queryable.SingleOrDefault

Namespace: SD.LLBLGen.Pro.LinqSupportClasses
Assembly: SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.9.0.0 (5.9.0)

Syntax

Copy

public static Task<TSource> SingleOrDefaultAsync<TSource>(
	this IQueryable<TSource> source,
	Expression<Func<TSource, bool>> predicate,
	TSource defaultValue
)

<ExtensionAttribute>
Public Shared Function SingleOrDefaultAsync(Of TSource) ( 
	source As IQueryable(Of TSource),
	predicate As Expression(Of Func(Of TSource, Boolean)),
	defaultValue As TSource
) As Task(Of TSource)

Parameters

source: Type: System.LinqIQueryableTSource
The source.
predicate: Type: System.Linq.ExpressionsExpressionFuncTSource, Boolean
The predicate.
defaultValue: Type: TSource
The default value to return if the sequence is empty

Type Parameters

TSource: The type of the source.

Return Value

Type: TaskTSource

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQueryableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

QueryableExtensionMethods Class

SingleOrDefaultAsync Overload

SD.LLBLGen.Pro.LinqSupportClasses Namespace