出错页面是:http://www.0xue.com/index.aspx?c=course&a=facelist&sp=classid-31
异常信息:Exception of type 'System.Web.HttpUnhandledException' was thrown.
Source:System.Web
StackTrace:
   at System.Web.UI.Page.HandleError(Exception e)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest()
   at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
   at System.Web.UI.Page.ProcessRequest(HttpContext context)
   at ASP.index_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\1f57d12e\4340dad9\App_Web_omzsmnvi.2.cs:line 0
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

InnerException:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at System.Data.DataView.CopyTo(DataRowView[] array, Int32 index)
   at System.Data.DataView.GetEnumerator()
   at System.Data.DataView.ToTable(String tableName, Boolean distinct, String[] columnNames)
   at Kesion.Cache.MyCache.GetCosClassFieldByEName(String ename, String col)
   at Kesion.HtmlTags.BasicField.GetCourseListUrl(String ruleName, String ename, Int32 classid, Boolean sp)
   at Kesion.HtmlTags.Intermediate.CosLoopClass.Run(String Param)
   at Kesion.HtmlTags.ReplaceLabels.GetLabelContent(String Param)
   at Kesion.HtmlTags.ReplaceLabels.ReplaceBasicLabel(String& str)
   at Kesion.HtmlTags.ReplaceLabels.ReplaceFunFunctionLabel(String& FileStr)
   at Kesion.HtmlTags.ReplaceLabels.ReplaceFunAndSQLLabel(String& FileStr)
   at Kesion.HtmlTags.ReplaceLabels.ReplaceAllLabel(String& FileStr)
   at Kesion.Controllers.courseController.DoFaceListSearch(String& F_C, Boolean isMobileDevice)
   at Kesion.Controllers.courseController.DoFaceSearch(Boolean isMobileDevice)
   at Kesion.Controllers.courseController.FaceList(Boolean isMobileDevice)
   at Kesion.Controllers.courseController.Run(Boolean isMobileDevice)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Kesion.NET.WebSite.Index.Page_Load(Object sender, EventArgs e)
   at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)