using System; namespace SmartDeviceApplication1 { /// <summary> /// Summary description for Class1. /// </summary> public class Class1:System.Windows.Forms.Button { public Class1() { // // TODO: Add constructor logic here // base.BackColor = System.Drawing.Color.Red; } } }Now I want to use my new button (Class1) in my PPC app. So I add a standard button to the designer and change the System.Windows.Forms.Button to Class1 in the code (when creating a PC app I am used to this working). When I go back to the designer the button is gone and if I build the app and run the exe the button is there and is indeed red.