//DAL层
public EasyFastCMS.Model.UserGroup GetModel(int ID)
        {
            Model.UserGroup model = new Model.UserGroup();
            using (var edm = new EasyFastCMSEntities())
            {
                var query = edm.EasyFastCMS_UserGroup.Where(ug => ug.ID == ID);
                foreach (EasyFastCMS_UserGroup ug in query)
                {
                    model.ID = ug.ID;
                    model.GroupName = ug.GroupName;
                }
            }
            return model;
        }

//BLL层
private readonly SQLServerDAL.UserGroup dal = new SQLServerDAL.UserGroup();
public Model.UserGroup GetModel(int id)
        {
            return dal.GetModel(id);
        }

//Web层

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                LoadInfo();
            }
        }

private void LoadInfo()
        {
            BLL.UserGroup bll = new BLL.UserGroup();
            Model.UserGroup model = bll.GetModel(Convert.ToInt32(Request.QueryString["id"]));

            this.Admin_Users_UserGroup_UserGroupUpDate_ltlID.Text = model.ID.ToString();
            this.Admin_Users_UserGroup_UserGroupUpDate_txtGroupName.Text=model.GroupName;
            this.Admin_Users_UserGroup_UserGroupUpDate_txtGroupIntro.Text=model.GroupIntro;
            this.Admin_Users_UserGroup_UserGroupUpDate_txtOrderID.Text = model.OrderID.ToString();
            ViewState["model"] = model;
        }