private void btnCreateUser_Click(object sender, EventArgs e)
        {
            frmCreateUser frm = frmCreateUser.GetRequest();

            frm.Show();
            this.Visible = false;
        }
 public static frmCreateUser GetRequest()
 {
     if (_Request == null || _Request.IsDisposed)
     {
         _Request = new frmCreateUser();
     }
     _Request.BringToFront();
     return(_Request);
 }