CommunicationObject::BeginOpen Method (AsyncCallback^, Object^)
Begins an asynchronous operation to open a communication object.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
Parameters
- callback
-
Type:
System::AsyncCallback^
The AsyncCallback delegate that receives notification of the completion of the asynchronous open operation.
- state
-
Type:
System::Object^
An object, specified by the application, that contains state information associated with the asynchronous open operation.
Return Value
Type: System::IAsyncResult^The IAsyncResult that references the asynchronous open operation.
| Exception | Condition |
|---|---|
| InvalidOperationException | |
| ObjectDisposedException | |
| CommunicationObjectFaultedException | The communication object is in a Faulted state and cannot be modified. |
| TimeoutException | The default interval of time that was allotted for the operation was exceeded before the operation was completed. |
The OnBeginOpen(TimeSpan, AsyncCallback^, Object^) method calls OnOpening and OnBeginOpen(TimeSpan, AsyncCallback^, Object^) if the communication object is initially in the Created state.
To insert processing after a communication object transitions to a closing state due to the invocation of a synchronous Open operation, use the Open method.
Available since 8
.NET Framework
Available since 3.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0