How to get the handle of the topmost form in a WinForm app?

Question

I have a WinForm app that has other child forms (not mdi). If the user presses \"Esc\" the topmost form should be closed even if it doesn\'t have the focus.

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Answer 1

You could implement a singleton-like pattern in your topmost form, and provide a static property that returns the one instance of itself and simply close it.

   public class MainForm : Form
   {
      private static MainForm mainForm;

      public static MainForm { get { return mainForm; } }

      public MainForm()
      {
         mainForm = this;
      }
   }


   // When the ESC key is pressed...
   MainForm.MainForm.Close();