“/”应用程序中的服务器错误。

未将对象引用设置到对象的实例。

说明: 执行当前 Web 请求期间,出现未经处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。

源错误:


行 73:                     <div class="onlineleft flef">
行 74:                         <ul>
行 75:                             <li><span class="onlinetit flef">Species:</span><span class="onlinecont frit"><%=SetParName(courseCate.ParId) %></span></li>
行 76:                             <li><span class="onlinetit flef">Course Name:</span><span class="onlinecont frit"><%=courseCate.CateName %></span></li>
行 77:                             <li><span class="onlinetit flef">Location:</span><span class="onlinecont frit"><%=courseCate.Address %></span></li>

源文件: f:\usr\localuser\bxw2404900223\OnlineRegistration.aspx    行: 75

堆栈跟踪:


[NullReferenceException: 未将对象引用设置到对象的实例。]
   ASP.onlineregistration_aspx.__Renderform1(HtmlTextWriter __w, Control parameterContainer) in f:\usr\localuser\bxw2404900223\OnlineRegistration.aspx:75
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +268
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +216
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +32
   System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +53
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +57
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +40
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +128
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +57
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1386


版本信息: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.0.30319.34280