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 42: 
Line 43:     If theChoice = 0 Then
Line 44:       Session("ReferPage") = Request.UrlReferrer.AbsoluteUri 'Get the reference page
Line 45: 
Line 46:     End If

Source File: C:\inetpub\wwwroot\SampleControl.ascx.vb    Line: 44

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   SampleControl.UpdateCart(Int32 theProID, Int32 theChoice) in C:\inetpub\wwwroot\SampleControl.ascx.vb:44
   SampleControl.Page_Load(Object sender, EventArgs e) in C:\inetpub\wwwroot\SampleControl.ascx.vb:144
   System.Web.UI.Control.OnLoad(EventArgs e) +105
   System.Web.UI.Control.LoadRecursive() +67
   System.Web.UI.Control.LoadRecursive() +161
   System.Web.UI.Control.LoadRecursive() +161
   System.Web.UI.Control.LoadRecursive() +161
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3784


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3770.0