private void btnSearch_Click(object sender, EventArgs e)
        {
            var en = new ManageAdminEntity();
            var re = new ManageAdminRepo();

            if (ValidateToSave() == true)
            {
                en.Id    = txtId.Text;
                en.Name  = txtName.Text;
                en.Phone = txtPhone.Text;

                re.Search(en, mgvAdmin);
            }
            else
            {
                MessageBox.Show("Invalid Input");
            }
        }