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 31:     Protected Sub Page_LoadComplete(sender As Object, e As System.EventArgs) Handles Me.LoadComplete
Line 32:         If IsPostBack = False Then
Line 33:             Session("pagina_provenienza") = Request.UrlReferrer.ToString
Line 34:         End If
Line 35: 

Source File: C:\inetpub\wwwroot\CastagnaSpa\PagineWeb\1\_168.aspx.vb    Line: 33

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   _168.Page_LoadComplete(Object sender, EventArgs e) in C:\inetpub\wwwroot\CastagnaSpa\PagineWeb\1\_168.aspx.vb:33
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Page.OnLoadComplete(EventArgs e) +9866566
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +795


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0