TplExtensions.InvokeAsync Method (AsyncEventHandler, Object, EventArgs)
Invokes asynchronous event handlers, returning a task that completes when all event handlers have been invoked. Each handler is fully executed (including continuations) before the next handler in the list is invoked.
Namespace: Microsoft.VisualStudio.Threading
Assembly: Microsoft.VisualStudio.Threading (in Microsoft.VisualStudio.Threading.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function InvokeAsync ( _
handlers As AsyncEventHandler, _
sender As Object, _
args As EventArgs _
) As Task
public static Task InvokeAsync(
this AsyncEventHandler handlers,
Object sender,
EventArgs args
)
[ExtensionAttribute]
public:
static Task^ InvokeAsync(
AsyncEventHandler^ handlers,
Object^ sender,
EventArgs^ args
)
static member InvokeAsync :
handlers:AsyncEventHandler *
sender:Object *
args:EventArgs -> Task
public static function InvokeAsync(
handlers : AsyncEventHandler,
sender : Object,
args : EventArgs
) : Task
Parameters
handlers
Type: Microsoft.VisualStudio.Threading.AsyncEventHandlerThe event handlers. May be nulla null reference (Nothing in Visual Basic).
sender
Type: System.ObjectThe event source.
args
Type: System.EventArgsThe event argument.
Return Value
Type: System.Threading.Tasks.Task
A Task that completes when all handlers have completed. The task is faulted if any handlers throw an exception.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type AsyncEventHandler. 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).
Exceptions
| Exception | Condition |
|---|---|
| AggregateException | Thrown if any handlers fail. It contains a collection of all failures. |
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.