[HttpException (0x80004005): 内容控件必须是内容页中的顶级控件,或是引用母版页的嵌套母版页。]
System.Web.UI.MasterPage.CreateMaster(TemplateControl owner, HttpContext context, VirtualPath masterPageFile, IDictionary contentTemplateCollection) +596
System.Web.UI.Page.get_Master() +69
System.Web.UI.Page.ApplyMasterPage() +18
System.Web.UI.Page.PerformPreInit() +58
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1256
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