private void btnAddUser_Click(object sender, EventArgs e)
        {
            frmAddUser adduser = new frmAddUser();

            if (adduser.ShowDialog() == DialogResult.OK)
            {
                customListBoxOtherUser.Items.Clear();
                LoadOtherUser(frmAddUser.AddedUser.Username);
                customListBoxOtherUser.SelectedIndex = highlightIndex;
            }
        }
 private void btnAddUser_Click(object sender, EventArgs e)
 {
     frmAddUser adduser = new frmAddUser();
     if (adduser.ShowDialog() == DialogResult.OK)
     {
         customListBoxOtherUser.Items.Clear();
         LoadOtherUser(frmAddUser.AddedUser.Username);
         customListBoxOtherUser.SelectedIndex = highlightIndex;
     }
 }