c#登录界面代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Linq;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using ProcessEngine;
using System.Security.Cryptography;
using System.Xml.Linq;
using DevExpress.CodeRush.StructuralParser;


namespace UltraANetT.Form
{
    public partial class Login : DevExpress.XtraEditors.XtraForm
    {
        private IProcStore _store = new ProcStore();
        //登录时从数据库中取出的密码
        private string onePassword;

        private string textEdit2Md5;
        //保存登录名
        public static string loginName;
        private OperStyle Operate;
        private string realPwd;
        private bool PT;
        public Login()

        {
            InitializeComponent();
            PT = true;
        }

        
        

        private void btn_Click(object sender, EventArgs e)
        {
           LoginIn();
        }

        private void LoginIn()
        {
            if (txtAccount.Text == "")
            {
                XtraMessageBox.Show("请输入登陆账号");
                return;
            }

            if (txtPassword.Text == "")
            {
                XtraMessageBox.Show("请输入登陆密码");
                return;
            }
            switch (Operate)
            {
                case OperStyle.DirEnter: