One of the biggest features of Silverlight since Version 3 is out-of-browser (OOB). This feature allows us to create an application in Silverlight that will be installed on the user's local machine. Once installed on the user's local machine, our application can interact with the desktop capabilities of the user's machine in various ways. Among the different integrations we get, we can read the machine's network state, show toast notifications, display web content, run applications on full screen, and much more. Silverlight 4 introduced a new powerful mode for OOB applications called elevated trust. Running our application in this mode, we can read local files and resources, show fewer confirmation prompts to the user, and use COM automation to communicate with other applications (such as Microsoft Office) or software APIs such as the speech API of the OS or drivers, which allows COM communication. An OOB application looks, and behaves, like any other...