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 207:        End If
Line 208:
Line 209:        If pageRequest.QueryString.Count > 0 AndAlso pageRequest.Url.AbsolutePath = pageRequest.UrlReferrer.AbsolutePath AndAlso pageRequest.UrlReferrer.Query.Length > 0 Then
Line 210:            Dim referrerQueryStringCollection = HttpUtility.ParseQueryString(pageRequest.UrlReferrer.Query)
Line 211:            For Each queryParamKey In referrerQueryStringCollection.AllKeys 'Use any previous page params that aren't in current page params (i.e. sort, filters)

Source File: C:\WebSites\Live\App_Code\ProductUtilities.vb    Line: 209

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   ProductUtilities.GetCategorySearchProductsUrl(HttpRequest pageRequest) in C:\WebSites\Live\App_Code\ProductUtilities.vb:209
   Category.Page_Load() in C:\WebSites\Live\Pages\Category.aspx.vb:51
   BasePage`1.Initialize() in C:\WebSites\Live\App_Code\BasePage.vb:27
   BasePage`1._Lambda$__R0-1(Object a0, EventArgs a1) +34
   System.Web.UI.Control.OnLoad(EventArgs e) +79
   System.Web.UI.Control.LoadRecursive() +130
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2853


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4087.0