title: Open Windows Form only once in C#
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/1403600/how-to-avoid-multiple-instances-of-windows-form-in-c-sharp">How to avoid multiple instances of windows form in c#</a>  </p>
  </blockquote>
  
  
  
  <p>I want to show open form only once in an application without creating them as MDI form.</p>