Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 74: 
Line 75:         classnameStr = _productclassinfo.ClassName;
Line 76:         TitleStr = _productinfo.Title.Length > 15 ? _productinfo.Title.Substring(0, 15) : _productinfo.Title;
Line 77:         authorStr = _productinfo.Author;
Line 78:         announcerStr = _productinfo.Announcer;

Source File: d:\网站\话匣子V2后台\沃听书wap\web\wo\Details.aspx.cs    Line: 76

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   wo_Details.BindData() in d:\网站\话匣子V2后台\沃听书wap\web\wo\Details.aspx.cs:76
   wo_Details.Page_Load(Object sender, EventArgs e) in d:\网站\话匣子V2后台\沃听书wap\web\wo\Details.aspx.cs:38
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Control.OnLoad(EventArgs e) +95
   System.Web.UI.Control.LoadRecursive() +59
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3062.0