Occurs when the communication object first enters the opening state.
event EventHandler Opening
This event occurs when the communication object first begins to transition from the Created state into the Opened state, immediately after either the Open or BeginOpen method is invoked.
Supported in: 4.6, 4.5, 4, 3.5, 3.0
.NET Framework Client Profile
Supported in: 4, 3.5 SP1
Portable Class Library
Supported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8
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