Re: COM DLL works fine in C# but not when using Remoting

Tech-Archive recommends: Fix windows errors by optimizing your registry

From: SARA (SARA_at_discussions.microsoft.com)
Date: 08/06/04 

Date: Fri, 6 Aug 2004 09:59:03 -0700

I am not using ASP.NET or XML Web Services at this time. I have a regular C#
client trying to call the function on the remote object. My client, MBR
Class and server are on the same machine in the same folder. Everything
works fine when I call other functions on my ISession object that return
strings.

"Sam Santiago" wrote:

> Sounds like a security problem. The user your request ends up running as
> does not have rights to instantiate a COM object. Check out this link:
>
> Implementing Impersonation in ASP.NET
> http://support.microsoft.com/default.aspx?scid=kb;EN-US;306158
>
> And this posting to the newsgroup from last year:
> http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&selm=e28I%23B3pDHA.708%40TK2MSFTNGP10.phx.gbl
>
> Thanks,
>
> Sam
>
> --
> _______________________________
> Sam Santiago
> ssantiago@n0spam-SoftiTechture.com
> http://www.SoftiTechture.com
> _______________________________
> "SARA" <SARA@discussions.microsoft.com> wrote in message
> news:45EA1241-5983-4DFB-800E-4AD85B67F92B@microsoft.com...
> > Thanks for the quick response.
> >
> > That is how I had it set up. I had the Session objectt declared as
> private.
> > I had a public function called connect(). Inside the connect() function
> I
> > was calling Session.Connect(Arg). Should the Arg object also be a private
> > member? Currently, I am creating a local object and passing it to the
> > Session.Connect(Arg) function.
> >
> > Here's the exact exception I am getting:
> >
> > Unhandled Exception: System.Runtime.InteropServices.COMException
> > (0x80010105): The server threw an exception.
> >
> > Server stack trace:
> > at TestClientLib.ISession.Connect(Arg pConnectParam)
> > at TestNameSpace.TestRemote.connect() in
> > c:\MyWebServices\Test.NET\TestRemote.cs:line 68
> > at
> >
> System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(Met
> hodBase
> > mb, Object[] args, Object server, Int32 methodPtr, Boolean
> fExecuteInContext,
> > Object[]& outArgs)
> > at
> >
> System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessa
> ge msg, Int32 methodPtr, Boolean fExecuteInContext)
> >
> > Exception rethrown at [0]:
> > at
> System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage
> > reqMsg, IMessage retMsg)
> > at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&
> > msgData, Int32 type)
> > at TestNameSpace.TestRemote.connect() in
> > c:\MyWebServices\Test.NET\TestRemote.cs:line 48
> > at TestNameSpace.RemoteClient.Main(String[] args) in
> > c:\MyWebServices\Test.NET\RemoteClient.cs:line 22
> >
> > "Sunny" wrote:
> >
> > > In article <F5C59F91-4C09-49A8-8FDF-7A64CA6FABE4@microsoft.com>,
> > > SARA@discussions.microsoft.com says...
> > > > Greetings All:
> > > >
> > > > I have a COM DLL that works perfectly fine in a C# program. However,
> if I
> > > > move the same code to a class that inherits from MarshalRefObj I get
> an
> > > > exception and I can not call the same function that I call correctly
> if I do
> > > > not use Remoting. The function in question is called Connect(Arg) in
> a class
> > > > called Session. I can call other functions in the Session class and
> teh Arg
> > > > class that return string args. However, the Connect(Arg) function
> fails and
> > > > throws System.Runtime.InteropServices.COMException.
> > > >
> > > > I am new to the .NET technology and I have tried searching the
> newsgroups
> > > > for this but have not found anything.
> > > >
> > > > I was curious to know what I am doing wrong.
> > > >
> > > > SARA
> > > >
> > > >
> > >
> > > Hi Sara,
> > >
> > > create the COM object as private in your MBR class. Then expose to the
> > > clients a wrapper methods, which in turn will call the COM object's
> > > methods.
> > >
> > > Sunny
> > >
>
>
>

Relevant Pages

  • RE: Connect Computer and VPN
    ... The RPC filter that we disabled can be enabled (if required for other ... Try to telnet 80 port from client to SBS, ... Microsoft CSS Online Newsgroup Support ... This newsgroup only focuses on SBS technical issues. ...
    (microsoft.public.windows.server.sbs)
  • Re: WSUS Client not yet reported
    ... Client cannot get updates from WSUS. ... Checked IP restriction setting of WSUS Administration ... Microsoft Online Newsgroup Support ... This newsgroup only focuses on SBS technical issues. ...
    (microsoft.public.windows.server.sbs)
  • RE: Remote Desktop to all but one client
    ... Again, thanks for using newsgroup. ... Microsoft CSS Online Newsgroup Support ... Remote Desktop to all but one client ...
    (microsoft.public.windows.server.sbs)
  • RE: Client Cmputer Setup
    ... Thank you for posting to the SBS Newsgroup. ... I suggest you that rejoin the problematic client workstation into SBS ... Microsoft CSS Online Newsgroup Support ...
    (microsoft.public.windows.server.sbs)
  • RE: assign applicatons to client computers does not work on some c
    ... client PC and problematic PC? ... Microsoft CSS Online Newsgroup Support ... This newsgroup only focuses on SBS technical issues. ... | Subject: RE: assign applicatons to client computers does not work on some ...
    (microsoft.public.windows.server.sbs)