title: Visual Studio Tool box is Empty
body: <p>I am using Visual Studio 2010 Professional. Suddenly the tool box controls are disappeared </p>
  
  <p>i try right clicking in the toolbox and select 'show all' but still i dont see the asp.net controls, here is the screen shot of toolbox</p>
  
  <p><img src="https://i.stack.imgur.com/oFc4H.png" alt="enter image description here"></p>