title: add user control to a form
body: <p>I have created a user control with a TextBox and two Buttons, but I haven't created events, just I place them to user control. When I want to add the user control to my form it says: </p>
  
  <blockquote>
    <p>Cannot move Task_control.cs. The destination folder is the same as the source folder. </p>
  </blockquote>
  
  <p>I can't understand why.</p>