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 75: 
Line 76: 	templateBuilder.Append("\r\n
Line 77: 	templateBuilder.Append(Utils.ObjectToStr(catemodel.img_url));
Line 78: 	templateBuilder.Append(");\">
\r\n
\r\n  
褰撳墠浣嶇疆锛?lt;a href=\"/\">棣栭〉");
Line 79: 	templateBuilder.Append(get_category_menu(call_index , category_id).ToString());

Source File: d:\webapp\new-net\cslxglass.com\aspx\default\listpic.aspx    Line: 77

Stack Trace: 


[NullReferenceException: Object reference not set to an instance of an object.]
   ASP.aspx_default_listpic_aspx.OnInit(EventArgs e) in d:\webapp\new-net\cslxglass.com\aspx\default\listpic.aspx:77
   System.Web.UI.Control.InitRecursive(Control namingContainer) +140
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +480

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1040
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