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ICommunicationObject.Open Method

Causes a communication object to transition from the created state into the opened state.

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

void Open()

ExceptionCondition
CommunicationException

The ICommunicationObject was unable to be opened and has entered the Faulted state.

TimeoutException

The default open timeout elapsed before the ICommunicationObject was able to enter the Opened state and has entered the Faulted state.

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).

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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