How can I enable the mnemonics (underline) to show when my application is launched?

Usually the underline appears only after you press the ALT Key, but you can enable it by changing the Operating System Settings. On Windows XP, Right Click Desktop to bring up the Display Properties Dialog and then choose Appearance tab and then the Effects Button and uncheck the checkbox ‘Hide Underlined letters for keyboard navigation until I press the ALT Key’.

How can I display a pop up a confirmation dialog when the user closes the form?

You can listen to the Form’s Closing event, where you can display a MessageBox as show below: [C#] private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e) { if (MessageBox.Show(‘Do you want to close the application?’, ‘Close Application’, MessageBoxButtons.YesNo) == DialogResult.No) e.Cancel = true; } [VB.NET] Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) If MessageBox.Show(‘Do you want to close the application?’,’Close Application’,MessageBoxButtons.YesNo) = DialogResult.No Then e.Cancel = True End If End Sub