FormClosing显示两次退出确认消息框

Question

I am facing a problem on form closing. It's shows my exit confirm message box 2 times and and ask 2 times "Are you sure to exit?":

if (MessageBox.Show("Are you sure to exit. Confirm?", "Rest O Rant", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
    Application.Exit();
    MessageBox.Show("Thank You For Using Rest O Rant Software.", "Closing message!", MessageBoxButtons.OK);
}
else
{
    e.Cancel = true;
    this.Activate();
}   

Answer 1

try this code

MessageBox.Show("Thank You For Using Rest O Rant Software.", "Closing message!", MessageBoxButtons.OK);

Application.Exit();