title: Textbox selected from start
body: <p>I'm trying to write a small program in C# to calculate a equation with a few known variables. A few textboxes (where each variable need to be typed) and a single "calculate" button.</p>
  
  <p>What I'm trying to implement now is that my keyboard cursor is active in a selected textbox when the program starts.</p>
  
  <p>But I can't figure it out.</p>
  
  <p>Hope someone can help me.</p>