<P>在利用sps的sdk进行开发是，我想在一个文档库中新建一个文件夹，但报错：Microsoft.SharePoint.SPException: 无效项目数据 -- 缺少 FileRef <BR>请高手帮我看看下面代码有什么问题！！ <BR></P> <P>SPSite siteList = new SPSite(sps_host); <BR>using (SPWeb web = siteList.OpenWeb()) <BR>{ <BR>&nbsp; &nbsp; web.AllowUnsafeUpdates = true; <BR>&nbsp; &nbsp; SPListCollection lists = web.GetListsOfType(SPBaseType.DocumentLibrary); <BR>&nbsp; &nbsp; lists.IncludeRootFolder = true; <BR>&nbsp; &nbsp; SPList docsList = lists["行政管理"]; <BR><BR>&nbsp; &nbsp; string rootFolderUrl = docsList.RootFolder.ServerRelativeUrl; <BR>&nbsp; &nbsp; SPListItem folder1 = docsList.Items.Add(rootFolderUrl, SPFileSystemObjectType.Folder, null); <BR>&nbsp; &nbsp; folder1["Title"] = "规章制度"; <BR>&nbsp; &nbsp; folder1["_ModerationStatus"]=0; <BR>&nbsp; &nbsp; folder1.Update();&nbsp; <BR>} </P>