ICommunicationObject.Open Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Causes a communication object to transition from the created state into the opened state.
Namespace: System.ServiceModel
Assembly: System.ServiceModel (in System.ServiceModel.dll)
Syntax
'Declaration
Sub Open
void Open()
Exceptions
| Exception | Condition |
|---|---|
| CommunicationException | The ICommunicationObject was unable to be opened and has entered the Faulted state. |
| TimeoutException | The default open time-out elapsed before the ICommunicationObject was able to enter the Opened state and has entered the Faulted state. |
Remarks
When an ICommunicationObject is instantiated, it begins in the Created state. In the Created state, the object can be configured (for example, properties can be set, or events can be registered), but it is not yet usable to send or receive messages. The Open method causes an ICommunicationObject to enter into the Opening state, where it remains until the open operation succeeds, the open operation times out or fails and the object becomes faulted, or the ICommunicationObject is aborted.
In the Opened state, the ICommunicationObject is usable (for example, messages can be received), but it is no longer configurable.
There is also an asynchronous version of the open method that is initiated by calling BeginOpen() and completed by calling EndOpen(IAsyncResult).
Version Information
Silverlight
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
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.