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!