private void btReceptionistLogin_Click(object sender, EventArgs e)
        {
            string caption = "输入提示";

            //用户名或密码都不为空
            if (CheckInput())
            {
                //检索用户名密码都存在
                string message = string.Empty;
                if (CheckUser(ref message))
                {
                    Member member = new Member();
                    member.MemberId  = this.txtReceptionistID.Text.Trim();
                    member.MemberPwd = this.txtReceptionistPwd.Text.Trim();

                    receptionist.MemberId  = txtReceptionistID.Text;
                    receptionist.MemberPwd = txtReceptionistPwd.Text;
                    //通过账号密码是否为空,账号密码是否能在数据库中找到,是之通过验证,打开前台的管理界面
                    ReceptionistMainform rm = new ReceptionistMainform();
                    rm.rl = this;
                    this.Hide();//隐藏登陆窗体
                    rm.ShowDialog();
                    this.Close();
                }
                else
                {
                    MessageBox.Show(message, caption, MessageBoxButtons.OK, MessageBoxIcon.Warning);
                }
            }
        }
        private void btReceptionistLogin_Click(object sender, EventArgs e)
        {
            string caption = "输入提示";
            //用户名或密码都不为空
            if (CheckInput())
            {
                //检索用户名密码都存在
                string message = string.Empty;
                if (CheckUser(ref message))
                {
                    Member member = new Member();
                    member.MemberId =this.txtReceptionistID .Text.Trim();
                    member.MemberPwd =this.txtReceptionistPwd .Text.Trim();

                    receptionist.MemberId = txtReceptionistID.Text;
                    receptionist.MemberPwd = txtReceptionistPwd.Text;
                    //通过账号密码是否为空,账号密码是否能在数据库中找到,是之通过验证,打开前台的管理界面
                    ReceptionistMainform rm = new ReceptionistMainform();
                    rm.rl = this;
                    this.Hide();//隐藏登陆窗体
                    rm.ShowDialog();
                    this.Close();

                }
                else
                {
                    MessageBox.Show(message, caption, MessageBoxButtons.OK, MessageBoxIcon.Warning);
                }
            }
        }