“/”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 89: 
行 90:                                var teacher = new w_teacher();
行 91:                                teacher = db.FindOne<w_teacher>("w_teacher", video.a_id);
行 92:                            %>
行 93:                     <div class="section">

源文件: d:\smt_2016\home\html\platform.aspx    行: 91

堆栈跟踪:


[NullReferenceException: 未将对象引用设置到对象的实例。]
   ASP.home_html_platform_aspx.__Renderform1(HtmlTextWriter __w, Control parameterContainer) in d:\smt_2016\home\html\platform.aspx:91
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +116
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +11834584
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +46
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +78
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +49
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +249
   System.Web.UI.Page.Render(HtmlTextWriter writer) +38
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +78
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8752


版本信息: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.7.3905.0