asp.net 2.0导航控件 menu,SiteMapPath使用

如果前台有一个web.sitemap文件,后台也有一个admin.sitemap文件.把菜单项写入到.sitemap这两个文件中.
前台有一个母板页Default.master,后来也有一个母板页admin.master.
Default.master:
<asp:Menu ID="Menu1" runat="server" DataSourceID="SiteMapDataSource1"

Orientation="Horizontal"
                MaximumDynamicDisplayLevels="5" StaticEnableDefaultPopOutImage="False"

CssClass="Menu"
                DisappearAfter="200" StaticDisplayLevels="2" DynamicVerticalOffset="2"

StaticSubMenuIndent="6px"
                DynamicEnableDefaultPopOutImage="False">
                <StaticMenuItemStyle CssClass="Menu" />
                <DynamicMenuItemStyle CssClass="SubMenu" />
            </asp:Menu>
<asp:SiteMapPath ID="SiteMapPath1" runat="server">
</asp:SiteMapPath>
SiteMapPath不需要指明SiteMapProvider,默认就是web.sitemap
SiteMapDataSource1 默认的SiteMapProvider是web.可以才代码判断.给SiteMapProvider赋值.比如权限的

控制,不同人看到的菜单一样.

admin.master.
<asp:Menu ID="Menu1" runat="server" DataSourceID="SiteMapDataSource1"

Orientation="Horizontal"
                MaximumDynamicDisplayLevels="5" StaticEnableDefaultPopOutImage="False"

CssClass="Menu"
                DisappearAfter="200" StaticDisplayLevels="2" DynamicVerticalOffset="2"

StaticSubMenuIndent="6px"
                DynamicEnableDefaultPopOutImage="False">
                <StaticMenuItemStyle CssClass="Menu" />
                <DynamicMenuItemStyle CssClass="SubMenu" />
            </asp:Menu>
<asp:SiteMapPath ID="SiteMapPath1" runat="server" SiteMapProvider="admin">
</asp:SiteMapPath>
SiteMapPath要指明SiteMapProvider="admin",不然默认是web.sitemap
c#:
        protected void Page_Load(object sender, EventArgs e)
        {
            GetMenuControl();
        }
        public void GetMenuControl()
        {
            SiteMapDataSource1.SiteMapProvider = "admin";
        }
/*web.config配置如下
<siteMap>
            <providers>
                <add name="web" type="System.Web.XmlSiteMapProvider"

siteMapFile="Web.sitemap"/>
                <add name="Admin" type="System.Web.XmlSiteMapProvider"

siteMapFile="~/SiteMap/Admin.sitemap"/>
            </providers>
        </siteMap>
*/