protected void btnSave_Click(object sender, EventArgs e)
 {
     if (_adminUserBll.CheckUserNameExists(txtUserName.Text))
     {
         DisplayMessage.ShowMessage("Username already registered, please choose a another username !", Page);
         return;
     }
     else if (_adminUserBll.CheckEmailExists(txtEmail.Text))
     {
         DisplayMessage.ShowMessage("Email already registered, please choose a another email !", Page);
         return;
     }
     else
     {
         AddNewAdminUser();
         ClearControls.ClearControl(this);
         DisplayMessage.ShowMessage("Inserted successfully !", Page);
     }
 }