如何在一个站点里定义多个sitemap---针对asp.net2.0

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You can add multiple SiteMap Providers in your web.config. Each one could map to a specific sitemap file (left.sitemap, right.sitemap, etc.). Then you could do something like this with each Menu bound to a different SiteMapDataSource:

SiteMapDataSource1.Provider = SiteMap.Providers["left"]; //这里实际上提示我们可以编程实现

如何设计时实现呢？

假设我们站点下有2个sitemap文件：web.sitemap , left.sitemap

在web.config里如下设定：
  <siteMap defaultProvider="XmlSiteMapProvider" enabled="true">
   <providers>
    <add name="XmlSiteMapProvider"
            description="SiteMap provider which reads in .sitemap XML files."
            type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
            siteMapFile="web.sitemap"
            securityTrimmingEnabled="true"/>
    <add name="left"
            description="SiteMap provider which reads in .sitemap XML files."
            type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
            siteMapFile="left.sitemap"
            securityTrimmingEnabled="true"/>
   </providers>
  </siteMap>

设计时，在SiteMapDataSource1属性窗口的SiteMapProvider 里填 left 即可