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POSystem.Web.dll different version giving me problems in vb.net
 

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    <p>I have a VB.NET web application project written in VS2010 targeted to the .Net 2.0 framework (don't ask I know). I have a class with an import statement that says</p> <pre><code>Imports System.Web.HttpContext </code></pre> <p>Lower down I try to use</p> <pre><code>Current.Session("username") = "user" Current.Session("psswd") = "psswd" Current.Session("dbName") = "database" If (IsNothing(Current.Session("username")) Or IsNothing(Current.Session("psswd")) Or IsNothing(Current.Session("dbName"))) Then Current.Response.StatusCode = 402 Else ' Do some stuff here End if </code></pre> <p>It works fine on my personal machine (windows xp SP3) but breaks on the server. I can't debug it on the server so I'm relying on stack trace to give me the error.</p> <p>Stacktrace gives me</p> <pre><code>[NullReferenceException: Object variable or With block variable not set.] Microsoft.VisualBasic.CompilerServices.Container..ctor(Object Instance) +497860 Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateGet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack) +373 letter_main.Logon.login_user() in C:\VSProjects\letter_main\letter_main\Old_App_Code\Logon.vb:55 letter_main._Default.Page_Load(Object sender, EventArgs e) in C:\VSProjects\letter_main\letter_main\Default.aspx.vb:32 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +50 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +62 </code></pre> <p>Line 55 in Logon.vb is the line 'Current.Response.StatusCode = 402' which it should never get to if it managed to put the values in the session. I'm guessing it hasn't?</p> <p>So I investigated System.Web.dll on both of the machines and I found both were registered in the c:\%WINDIR%\assemblies from the location C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Web.dll but I had a different version on the server than on my local machine</p> <p>Version on server is: 2.0.50727.3053 Version on my machine is: 2.0.50727.3614</p> <p>Could this be the cause of my problem? Can anyone think of a good way to troubleshoot? The server is windows 2003, not sure if I can just copy it's System.Web.dll and use regasm to test on my local machine? I can't replace the server version as there are other web apps running there that will need it.</p>
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    1. USRalph
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      1. VTUpMod
    1. COGiven the reference to `NewLateBinding`, I'd at least try `Option Strict On` to see if you've got glaring errors.
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      1. USMark Hurd
 

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