title: C# Are you missing a using directive or an assembly reference?
body: <p>This error message started appearing during compilation after I deleted the entire code for the tabPage1_Click event behavior. </p>
  
  <p>It didnt have any body code in it, because I accidentaly clicked on it fast two times and the event code got added to the source when I just started programming the application. Now I'm done and everything is tip top, except that useless definition of tabPage1_Click.</p>
  
  <blockquote>
    <p>Error 1   'Bar.placeOrderForm' does not contain a definition for 'tabPage1_Click' and no extension method 'tabPage1_Click' accepting a first argument of type 'Bar.placeOrderForm' could be found (are you missing a using directive or an assembly reference?)   C:\admin\Bar\Bar\placeOrderForm.Designer.cs 96  67  Bar</p>
  </blockquote>