spweb处理自己并引发异常

尝试使用时 SPWeb.GetSiteData(SPSiteDataQuery) (试图将某些数据绑定到spgridview),它会向我抛出具有以下stacktrace的targetInvocationException:

例外

  at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Web.UI.WebControls.ObjectDataSourceView.InvokeMethod(ObjectDataSourceMethod method, Boolean disposeInstance, Object& instance)
   at System.Web.UI.WebControls.ObjectDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments)
   at System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback)
   at System.Web.UI.WebControls.DataBoundControl.PerformSelect()
   at System.Web.UI.WebControls.BaseDataBoundControl.DataBind()
   at System.Web.UI.WebControls.GridView.DataBind()
   at Balticovo.SharePoint.WebParts.CrossSiteDataQueryWebPart.OnLoad(EventArgs e)

正在调用的方法是GetData。在使用消息调查InnerException之后 Exception from HRESULT: 0x80020009 (DISP_E_EXCEPTION)) SharePoint似乎希望发布以下资源:

   at Microsoft.SharePoint.Library.SPRequest.ReleaseResources()
   at Microsoft.SharePoint.SPRequestManager.Release(SPRequest request)
   at Microsoft.SharePoint.SPWeb.Invalidate()
   at Microsoft.SharePoint.SPWeb.Close()
   at Microsoft.SharePoint.SPWeb.Dispose()
   at Balticovo.SharePoint.Extensions.GetCrossSiteData(SPWebApplication webApp, SPCrossSiteDataQuery query)
   at Balticovo.SharePoint.TasksTableAdapter.GetData(Guid queryId, Boolean dataForOutlook)
   at Balticovo.SharePoint.TasksTableAdapter.GetData(Guid queryId)

但是在调用spweb.getSiteData(spSiteDataQuery)之前,到spweb.dispose()为止的所有这些方法都不会处理任何内容,而后调用spweb.getSiteData(spSiteDataQuery)会引发异常。

我的密码

SPWebApplication的实例- Microsoft.SharePoint.WebControls.SPControl.GetContextWebApplication(HttpContext.Current);

然后我在函数getCrossSiteData中执行如下操作:

foreach (string siteUrl in query.QuerySites)
{
   try
   {
      using (SPSite site = new SPSite(siteUrl))
      using (SPWeb web = site.OpenWeb())
      {
         DataTable dt = web.GetSiteData(query.SiteDataQuery); //Hangs here
         ....
      }
   }
}

有什么想法吗?谢谢您。