[CLOSED] Using ContentPlaceHolder will Makes "The state information is invalid for this page and might be corrupted" Exception

[u8621011]

Fabricio,

But one more question, why my button no response after I mark out the AntiXsrfTokenKey viewstate related code?

The view code is

<%@ Page Title="About" Language="C#" MasterPageFile="Site.Master" AutoEventWireup="true" CodeBehind="About.aspx.cs" Inherits="TestWebForm.About" %>

<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">
    <ext:Panel runat="server">
        <Items>
            <ext:FormPanel runat="server">
        <Items>
            <ext:Panel runat="server">
                <Items>
                    <ext:GridPanel ID="gridOrg" runat="server" Title="医疗机构" ColumnLines="true" Height="200">
                        <TopBar>
                            <ext:Toolbar ID="GridOrgToolbar" runat="server">
                                <Items>
                                    <ext:Button ID="BtnAdd" Text="新增" runat="server">
                                        <DirectEvents>
                                            <Click OnEvent="OnOrgCreate" />                                  
                                        </DirectEvents>
                                    </ext:Button>
                                </Items>
                            </ext:Toolbar>
                        </TopBar>
                    </ext:GridPanel>
                </Items>
            </ext:Panel>
            
        </Items>
    </ext:FormPanel>
        </Items>
    </ext:Panel>
    
</asp:Content>

code behind is:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Ext.Net;

namespace TestWebForm {
    public partial class About : Page {
        protected void Page_Load(object sender, EventArgs e) {

        }

        protected void OnOrgCreate(object sender, DirectEventArgs e) {
            X.Msg.Alert("System Msg", "hello");
        }
    }
}

It just return "{}" in resopnse. No Message Dialog


BTW,
Your advice is to mark out the viewstate code, right? But this is the code visual studio template generate for us. I think everyone will encounter this problem in new project. Maybe it should be log as bug will be better.