title: How can I allow things such as Ctrl-A and Ctrl-Backspace in a C# TextBox
body: <p>I've got a System.Windows.Forms.TextBox that is multi-line but it doesn't accept commands like Control-A and Control-Backspace.</p>
  
  <p>Control-A does nothing and Control-Backspace inserts a box character.</p>
  
  <p>The "Shortcuts Enabled" property is set to true.</p>