Torna al Thread
If Session("idstruttura") IsNot Nothing OrElse Session("idstruttura") <> String.Empty Then
.......
Else
REM serve a pulire la cache
Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1))
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Response.Cache.SetNoStore()
Session.Abandon()
Response.Redirect("~/default.aspx")
End If