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AsyncTaskMethodBuilder(TResult) Structure
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AsyncTaskMethodBuilder(Of TResult) Structure

.NET Framework 4.6 and 4.5

Represents a builder for asynchronous methods that returns a task and provides a parameter for the result.

Namespace:  System.Runtime.CompilerServices
Assemblies:   mscorlib (in mscorlib.dll)
  System.Threading.Tasks (in System.Threading.Tasks.dll)

<HostProtectionAttribute(SecurityAction.LinkDemand, Synchronization := True,  _
	ExternalThreading := True)> _
Public Structure AsyncTaskMethodBuilder(Of TResult)

Type Parameters


The result to use to complete the task.

The AsyncTaskMethodBuilder(Of TResult) type exposes the following members.

Public propertyTaskGets the task for this builder.

Public methodAwaitOnCompleted(Of TAwaiter, TStateMachine)Schedules the state machine to proceed to the next action when the specified awaiter completes.
Public methodAwaitUnsafeOnCompleted(Of TAwaiter, TStateMachine)Schedules the state machine to proceed to the next action when the specified awaiter completes. This method can be called from partially trusted code.
Public methodStatic memberCreateCreates an instance of the AsyncTaskMethodBuilder(Of TResult) class.
Public methodEqualsIndicates whether this instance and a specified object are equal. (Inherited from ValueType.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from ValueType.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSetExceptionMarks the task as failed and binds the specified exception to the task.
Public methodSetResultMarks the task as successfully completed.
Public methodSetStateMachineAssociates the builder with the specified state machine.
Public methodStart(Of TStateMachine)Begins running the builder with the associated state machine.
Public methodToStringReturns the fully qualified type name of this instance. (Inherited from ValueType.)

This type and its members are intended for use by the compiler.


The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: Synchronization | ExternalThreading. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

.NET Framework

Supported in: 4.6, 4.5

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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