OK, so you are making an awesome new Windows 8* app using the C# programming language and XAML designer in Visual Studio* 2012.  You open up the designer for your XAML file and want to paste in a calendar item (DatePicker) into your app.  You peruse through the Toolbox to find that…there's nothing there out-of-the-box to do this! What should we do?  Plan B: build one!  This article shows you how!