CommunicationObject.OnBeginOpen Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
When implemented in a derived class, inserts processing on a communication object after it transitions to the opening state due to the invocation of an asynchronous open operation.
Assembly: System.ServiceModel (in System.ServiceModel.dll)
protected abstract IAsyncResult OnBeginOpen( TimeSpan timeout, AsyncCallback callback, Object state )
Parameters
- timeout
- Type: System.TimeSpan
The TimeSpan that specifies how long the on open operation has to complete before timing out.
- callback
- Type: System.AsyncCallback
The AsyncCallback delegate that receives notification of the completion of the asynchronous on open operation.
- state
- Type: System.Object
An object, specified by the application, that contains state information associated with the asynchronous on open operation.
Return Value
Type: System.IAsyncResultThe IAsyncResult that references the asynchronous on open operation.
| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException | timeout is less than zero. |
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