private void button1_Click(object sender, EventArgs e)
 {
     string oldPsw = textBox1.Text;
     string newPsw1 = textBox2.Text;
     string newPsw2 = textBox3.Text;
     TblSeatBLL bll = new TblSeatBLL();
     ChangePswReasult reasult = bll.ChangePsw(GlobalFmData.autoId, oldPsw, newPsw1, newPsw2);
     switch (reasult)
     {
         case ChangePswReasult.Successed:
             MessageBox.Show("修改成功");
             break;
         case ChangePswReasult.DifPsw:
             MessageBox.Show("两次密码不同");
             break;
         case ChangePswReasult.ErrorOldPsw:
             MessageBox.Show("旧密码错误");
             break;
         case ChangePswReasult.Failed:
             MessageBox.Show("未知错误,修改失败");
             break;
         default:
             break;
     }
 }
 /// <summary>
 /// 登入按钮
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void button2_Click(object sender, EventArgs e)
 {
     string uid =textBox2.Text.Trim();
     string psw = textBox3.Text;
     TblSeatBLL bll = new TblSeatBLL();
     if (bll.Login(uid, psw))
     {
         MessageBox.Show("ok");
     }
     else
     {
         MessageBox.Show("失败");
     }
 }
 /// <summary>
 /// login2窗体的登入按钮
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void btnLogin_Click(object sender, EventArgs e)
 {
     string uid = textBox1.Text;
     string psw = textBox2.Text;
     TblSeatBLL bll = new TblSeatBLL();
     模拟三层.Model.UserMsg um = null;
     LoginReasult result = bll.Login2(uid, psw, out um);
     //判断情况并作出回应
     switch (result)
     {
         case LoginReasult.Succeed:
             MessageBox.Show("登入成功");
             label3.Text = "欢迎" + um.UserName;
             GlobalFmData.autoId = um.AutoId;
             btnChangePsw.Enabled = true;
             break;
         case LoginReasult.UserNameNoExist: MessageBox.Show("用户名不存在");
             break;
         case LoginReasult.PswError: MessageBox.Show("密码错误");
             break;
     }
 }