怎么取得MasterPage,的ViewState呢 ?

如何取得MasterPage,的ViewState呢 ??
IndexPage.Master.cs


public List<TreemenuInfo> Treemenu_List
{
     get { return (ViewState["Treemenu_List"] as List<TreemenuInfo>); }
     set { ViewState["Treemenu_List"] = value; }
}

InitPage()
lvTreeMenuList.DataSource = Treemenu_List;
lvTreeMenuList.DataBind();



test.aspx
<%@ Page Language="C#" MasterPageFile="~/IndexPage.Master" "%>

test.cs

public void InitPage()
{
      // 这里我想抓到 Master.page 的 Treemenu_List (ViewState) , 但是 Debug模式去看,似乎在这边已经抓不到MasterPage的 ViewState了?
   
      
}




------解决思路----------------------
http://iteches.com/archives/24207