CommunicationObject.OnClose Method

When implemented in a derived class, inserts processing on a communication object after it transitions to the closing state due to the invocation of a synchronous close operation.

Namespace:  System.ServiceModel.Channels
Assembly:  System.ServiceModel (in System.ServiceModel.dll)


Protected MustOverride Sub OnClose ( _
    timeout As TimeSpan _
protected abstract void OnClose(
    TimeSpan timeout


  • timeout
    Type: System.TimeSpan
    The Timespan that specifies how long the on close operation has to complete before timing out.


Exception Condition

timeout is less than zero.


The Close method calls OnClose if the communication object is initially in the Opened state.

To insert processing after a communication object transitions to a closing state due to the invocation of an asynchronous BeginClose operation, use the OnBeginClose method.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.