private void btnOk_Click(object sender, EventArgs e)
        {
            try
            {
                string  userName    = this.txtBoxUser.Text.Trim();
                string  telePhone   = this.txtBoxPhone.Text.Trim();
                string  email       = this.txtBoxEmail.Text.Trim();
                string  address     = this.txtBoxAddress.Text.Trim();
                string  realname    = this.txtRealname.Text.Trim();
                int     paramRoleID = Convert.ToInt32(this.cmbRole.SelectedValue.ToString());
                BUUsers myBUUsers   = new BUUsers();
                bool    checkValue  = myBUUsers.UpdateUser(userName, telePhone, realname, email, address, paramRoleID);

                if (checkValue)
                {
                    MessageBox.Show("用户修改成功");
                    this.DialogResult = DialogResult.OK;
                }
                else
                {
                    MessageBox.Show("用户修改成功");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }