Basic Prism Application for Beginners. Part2 (https://msdn.microsoft.com/en-us/library/gg406140.aspx) Continue from the Part 1. Lets Start Adding the module to our Report Designer Solution (1) Add a WPF User Control Library as shown below. Name it RibbonBarModule (2) Remove UserControl1.xaml and Add three Folders Views, ViewModels and Models. (3)The Solution Explorer will like this (4) Right Click on Project and Select Manage NuGet Package and Prism as given below (5) Install UnityExtensions by using command install-package prism.unityextensions Make sure that the project is changed in the Package Manager Console (6) Add New UserControl in Views Folder and Name it RibbonBarView (7) Now Add RibbonBarViewModel in ViewModels Folder. Add RibbonBarModel in Models Folder. (8) Add Interface IRibbonBarView in Views, IRibbonBarViewModel in ViewModels and IRibbonBarModel in IRibbonBarModel in Models folder. (9) inheri...