AccountsPrincipal newUser = AccountsPrincipal.ValidateLogin(userName, Password); //根据用户名和密码初始化用户标识，实现iprincipal接口

        if (newUser == null)

        {

            this.lblMsg.Text = "登陆失败： " + userName;

        }

        else

        {

            User currentUser = new NJJ.Accounts.Bus.User(newUser);//根据用户标识初始化用户对象

            Context.User = newUser;   将当前上下文用户标识设为新用户

            if (((SiteIdentity)User.Identity).TestPassword(Password) == 0) //检测用户密码

            {

                this.lblMsg.Text = "你的密码无效！";

            }

            else

            {

                FormsAuthentication.SetAuthCookie(userName, false); //设置用户登陆

                NJJ.TreeAndLog.TreeAndLogManage log = new NJJ.TreeAndLog.TreeAndLogManage();                  log.AddLog(DateTime.Now.ToString(), "用户登陆", User.Identity.Name, "1");//添加日志

                Session["UserInfo"] = currentUser;  //session保存当前用户信息

                Session["Style"] = currentUser.Style; //session保存用户设置的界面风格

                if (Session["returnPage"] != null) 

                {

                    string returnpage = Session["returnPage"].ToString();

                    Session["returnPage"] = null;

                    Response.Redirect(returnpage);

                }

                else

                {

                    Response.Redirect("main.htm");

                }

            }

int CategoryId = int.Parse(this.ClassList.SelectedValue);

        DataSet PermissionsList = AccountsTool.GetPermissionsByCategory(CategoryId);

        this.DataGrid1.DataSource = PermissionsList;

        this.DataGrid1.DataBind();

NJJ.TreeAndLog.TreeAndLogManage sm = new NJJ.TreeAndLog.TreeAndLogManage();

        DataTable dt = sm.GetTreeList("").Tables[0];

        this.listTarget.Items.Clear();

        //加载菜单选项到下拉列表中

        this.listTarget.Items.Add(new ListItem("根目录", "0"));

        DataRow[] drs = dt.Select("ParentID= " + 0);

        /循环读取，添加.

        foreach (DataRow r in drs)

        {

            string nodeid = r["NodeID"].ToString();

            string text = r["Text"].ToString();

            //string parentid=r["ParentID"].ToString();

            //string permissionid=r["PermissionID"].ToString();

            text = "╋" + text;

            this.listTarget.Items.Add(new ListItem(text, nodeid));

            int sonparentid = int.Parse(nodeid);

            string blank = "├";

            BindNode(sonparentid, dt, blank);

        }

        this.listTarget.DataBind();  绑定父类菜单

  /读取所有权限

       DataTable tabcategory = NJJ.Accounts.Bus.AccountsTool.GetAllCategories().Tables[0];

        int rc = tabcategory.Rows.Count;

        for (int n = 0; n < rc; n++)

        {

            string CategoryID = tabcategory.Rows[n]["CategoryID"].ToString();

            string CategoryName = tabcategory.Rows[n]["Description"].ToString();

            CategoryName = "╋" + CategoryName;

            this.listPermission.Items.Add(new ListItem(CategoryName, CategoryID));

            ///将权限绑定到下拉列表

            DataTable tabforums = NJJ.Accounts.Bus.AccountsTool.GetPermissionsByCategory(int.Parse(CategoryID)).Tables[0];

            int fc = tabforums.Rows.Count;

            for (int m = 0; m < fc; m++)

            {

                string ForumID = tabforums.Rows[m]["PermissionID"].ToString();

                string ForumName = tabforums.Rows[m]["Description"].ToString();

                ForumName = "  ├『" + ForumName + "』";

                this.listPermission.Items.Add(new ListItem(ForumName, ForumID));

            }

        }

        this.listPermission.DataBind();

        this.listPermission.Items.Insert(0, "--请选择--"); ///绑定权限