title: Visual Studio: Is there a way to collapse all items of Solution Explorer?
body: <p>I know that I can use Arrow Keys to collapse items of solution explorer one by one, but I would like to know if there is a way to collapse all items with only one operation. I want to know it because, today I have a solution with 6 projects that have at least <strong>two hundred files</strong> and if I try to collapse them one-by-one I will have a hard time.</p>
  
  <p><img src="https://i.stack.imgur.com/r4kdT.jpg" alt="Tree View - Solution Explorer (Visual Studio)"></p>