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From: "Andreas"
Subject: ADO from multiple applications causes "object reference not ...
Date: Fri, 7 Jun 2002 08:25:54 -0700
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>-----Original Message-----
>Hi,
>
>We have a .NET web application and a .NET web service
that
>are using a common assembly (each has one copy in its bin
>directory, of course). This assembly is using ADO (old
>ado, not ADO.NET) and was originally written in VB6 but
>has now been upgraded to .NET.
>
>This works just fine on our development machines but as
>soon as we deploy it to machines with only the .NET
>framework installed instead of Visual Studio.NET we get
>strange problems.
>
>If we access the web service first, it works but results
>in us not being able to run the web application. If we
>then restart IIS and run the web application first, we
get
>the same problem with the web service. This is strange
and
>very annoying.
>
>The exception we get is:
>
>"System.NullReferenceException: Object reference not set
>to an instance of an object.
> at System.Enum.InternalGetValue()
> at System.Enum.System.IConvertible.ToSByte
>(IFormatProvider provider)
> at DataAccessMTS.CDataAccessMTS.CreateParameters
>(Command& Cmd, Object[] ArgParams)
> at DataAccessMTS.CDataAccessMTS.RunSPGetRS(String
>SPName, String RegistryKey, Object[] Parameters) "
I found a solution to the problem. I just drag-and-dropped
ADODB.DLL to c:\winnt\assembly and it worked.
// Andreas
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