コード例 #1
0
 private void Empty_Leave(object sender, EventArgs e)
 {
     if (UserNameTxt.Text == "")
     {
         UserNameTxt.Focus();
         MessageBox.Show("NO username provided");
     }
     if (passwordtxt.Text == "")
     {
         passwordtxt.Focus();
         MessageBox.Show("NO password provided");
     }
 }