出错页面是:https://cq.lobn.com.cn/index.aspx?control-view,id-1447
异常信息:引发类型为“System.Web.HttpUnhandledException”的异常。
Source:System.Web
StackTrace:
   在 System.Web.UI.Page.HandleError(Exception e)
   在 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   在 System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   在 System.Web.UI.Page.ProcessRequest()
   在 System.Web.UI.Page.ProcessRequest(HttpContext context)
   在 ASP.index_aspx.ProcessRequest(HttpContext context)
   在 System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   在 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   在 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

InnerException:
System.IndexOutOfRangeException: 在位置 0 处没有任何行。
   在 System.Data.RBTree`1.GetNodeByIndex(Int32 userIndex)
   在 Kesion.Controllers.courseController.CourseLivePlay(Int32 Periodid, String FileStr, Boolean isMobileDevice, Boolean IsGroupPeriod, Boolean isSchool, Boolean isFromPlayerPage)
   在 Kesion.Controllers.courseController.CourseView(String FileStr, DataRow dr, Boolean isMobileDevice, Int32 teachWay, Boolean isSchool, DataRow drEp)
   在 Kesion.Controllers.courseController.View(Boolean isMobileDevice, Int32 viewId, Boolean isSchool, DataRow drEp)
   在 Kesion.Controllers.courseController.doRun(String a, Boolean isMobileDevice, Boolean isSchool, DataRow drEp)
   在 Kesion.Controllers.courseController.EnterPriseRun(Int32 schoolUserId, Boolean isMobileDevice)
   在 Kesion.NET.WebSite.Index.Page_Load(Object sender, EventArgs e)
   在 System.Web.UI.Control.OnLoad(EventArgs e)
   在 System.Web.UI.Control.LoadRecursive()
   在 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)