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 586:            w += "  and GroupId=" + HttpContext.Current.Session["g3"].ToString();
Line 587:            var g = d.Groups.SingleOrDefault(i => i.GroupId == Convert.ToInt32(HttpContext.Current.Session["g3"]));
Line 588:            HttpContext.Current.Session[Global_Session.searchitem] += g.GroupName + "@";
Line 589:        }
Line 590:

Source File: c:\inetpub\vhosts\offkade.org\httpdocs\product.aspx.cs    Line: 588

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   product.search() in c:\inetpub\vhosts\offkade.org\httpdocs\product.aspx.cs:588
   product.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\offkade.org\httpdocs\product.aspx.cs:118
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   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:4.6.1586.0