protected void Page_Load(Object sender, EventArgs e) { if (!IsPostBack) { JoinDate.SetValue(DateTime.Now); RoleID.DataSource = db.ExecuteDataTable("SELECT id,name FROM [T_UserRole]"); RoleID.DataTextField = "name"; RoleID.DataValueField = "id"; RoleID.DataBind(); RoleID.Items.Insert(0, new ListItem("选择角色", "0")); if (IsEdit) { LoadData(); UserName.Enabled = false; //Req1.Visible = Req2.Visible = false; } } }