private void cmdClear_Click(object sender, EventArgs e)
 {
     txtRole.Clear();
     chkActiveRole.Checked = true;
     chkIsAdmin.Checked    = false;
     cmdAdd.Enabled        = true;
     cmdUpdate.Enabled     = false;
     cmdDelete.Enabled     = false;
     ObjUserProfile.UserProfile_Load(null, null);
     try
     {
         gvRoles.DataSource = myUser.ListAllRoles();
     }
     catch
     {
     }
 }