title: How to thru char into TextBox?
body: <p>I have some TextBox on focus ( cursor is blinking on him ).
  Now, from other usercontrol ( that contain buttons ) i want to send event that will insert char into the TextBox when pressing any of the buttons that are on the usercontrol.</p>
  
  <p>This need to be without lose the focus from the TextBox ... ( blinking cursor on the TextBox ) </p>
  
  <p>How can i do it ? 
  ( i try to raise key down event - but its does not work ) </p>