Assembly: System.Windows (in System.Windows.dll)
This event is raised on the UI thread.
This event occurs when a call to BeginDrmSetupDecryptor has completed for the MediaStreamSource instance. If the initial call to BeginDrmSetupDecryptor throws an exception, this event will not be raised.
Each successful call to BeginDrmSetupDecryptor will result in one corresponding event, regardless of the success or failure of the setup. The exception to this rule is that there may not be a corresponding event if the source has been changed, for example SwitchMediaStreamAsync has been called, or the MediaStreamSource instance is in the process of being shut down.