title: Why Form1.resx dont allow me to Edit/Add resources?
body: <p>I add one Windows Form name as <code>Form1.cs</code> in my project and try to edit local resource file of same <code>Form1.cs</code> ( <code>Form1.resx</code> ) file, while editing VS pop up following confirmation box:</p>
  
  <p><img src="https://i.stack.imgur.com/kPmnP.png" alt="enter image description here"></p>
  
  <p>I don't understand why VS restrict me to add local resource file of <code>Form1.cs</code>.</p>