AdapterExtensionMethodsFetchFirstAsyncT Method (IDataAccessAdapter, DynamicQueryT, CancellationToken)

Async variant of FetchFirstT(IDataAccessAdapter, DynamicQueryT). Fetches the first object of the set returned by the query and returns that object, if any, otherwise null.

Namespace: SD.LLBLGen.Pro.QuerySpec.Adapter
Assembly: SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.6.0.0 (5.6.19.0117)

Syntax

Copy

public static Task<T> FetchFirstAsync<T>(
	this IDataAccessAdapter adapter,
	DynamicQuery<T> query,
	CancellationToken cancellationToken
)

<ExtensionAttribute>
Public Shared Function FetchFirstAsync(Of T) ( 
	adapter As IDataAccessAdapter,
	query As DynamicQuery(Of T),
	cancellationToken As CancellationToken
) As Task(Of T)

Parameters

adapter: Type: SD.LLBLGen.Pro.ORMSupportClassesIDataAccessAdapter
The adapter.
query: Type: SD.LLBLGen.Pro.QuerySpecDynamicQueryT
The query.
cancellationToken: Type: System.ThreadingCancellationToken
The cancellation token.

Type Parameters

T

Return Value

Type: TaskT
the first object in the resultset, or null if the resultset is empty.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IDataAccessAdapter. 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

AdapterExtensionMethods Class

FetchFirstAsync Overload

SD.LLBLGen.Pro.QuerySpec.Adapter Namespace