Use the .NET Windows Forms Application wizard to create a .NET Windows Forms application and target from an existing target.

1. 
   Select Use the library list and application
   object of an existing target on the Create the Application page
   in the wizard.
2. 
   On the Choose a Target page, select a target from
   the current workspace.
3. 
   On the Specify Target File page, specify the name
   of the new target file.
4. 
   Specify project information as described in Creating a .NET Windows Forms Project.