The method for displaying a Silverlight application in the Extensibility window of an Lync SDK application is simply to embed the application in an HTML page, and display the HTML page in the Extensibility window. Use the application ID for the Silverlight application to register the application using either run-time or install registration.

For information on displaying an HTML application in the Extensibility window, see Walkthrough: Perform Install Registration for an Extensibility Application .

For more information on registering applications, see Registering Contextual Conversation Packages .

In Lync SDK Silverlight applications use the LyncClient.GetHostingConversation method to return an object. See the following example.

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Object currentConversation = (Conversation ) LyncClient.GetHostingConversation();