I got following scenario here:
Unmanaged static lib (c++) which throws exceptions (e.g. throw new
MyExceptionClass(...))
Managed C++ dll which uses that lib

I have gone through necessary step and have been able to use a .Net
libraries (created using C#) in VB6. It run good untill I try to use
certain function in the library that is using Int64 type as parameter.
VB6 give the following error

Hi - I'm trying to call our existing COM software components from a new .NET
2005 project I am writing. The COM stuff in question is a DLL written in VB6.
Adding this as a COM reference in the IDE project Properties dialog produces
an interop DLL as expected, but as my .NET ...

I am writing a code to restore encrypted files using c#.NET
All my functions are successful.But in the target the file shows size 0KB.
i.e.,even if ReadFile API reads all the bytes,they are not written using the
call back function.Can someone please suggest me what am I doing ...

i would like to know how a c# class can keep a reference (pointer) to a
structure
allocated by unmanaged c++ code.
******************************************************

I would like to know how I can detect if an excel document needs to be saved
or not using the primary interop assemblies for excel XP.
There must be some kind of flag telling me this!
Thanks for your answer

I am having problems getting a C# component to release itself fro
memeory when calling it from a VB6 COM component via an interop.  Thi
is what I am doing:
VB6 COD

This might be a stupid question but it is not covered in any materials I
have been reviewing.
Basically, I am consuming a COM component using interop in my .ASP.Net
application.  When I move code over to production and run the project, I get

I am trying to create a class library accessible to in SQL server as a
COM. I am using the Wininet.dll and can get it to build successfully. I
then run tlbexp and create the type library and when I attempt to
register the dll with regasm.exe I get the following error:

I wrote a COM (ABC.dll) using VS.Net 2005
since it is not an application; I don't know how it can access app.config
(ABC.dll.config)
I tried ConfigurationManager.AppSettings but it didn't work

I would like to create a singleton out of proc server using C# to be called
by a legacy COM client.  I don't want to use NT service.  Has anybody done
this.  All the example I've seen are all either InProc or NT service.

I am just trying to port my Application from .NET 1.1 to 2.0.
Native C++ Code works fine.
Native C# Code also works fine (just some deprecations).
The problems start when trying to port my managed C++ Wrappers.

I have a COM interface definition which has a property set like this:
[propget, helpstring("property Prop")] HRESULT Prop([out, retval]
GuidType *pVal);
[propput, helpstring("property Prop")] HRESULT Prop([in] GuidType

How do I get an IntPtr to a specified object, or rather, how do I convert an
Object to an IntPtr?
Thanks in advance,
Per Rasmussen.

We are trying to transfer a protected file (with DRM) to a portable device
using Windows Media Device Manager SDK (WMDMsdk) . We have no problem running
this as an ATL application. But since our application is written in C#, we're
trying to  write a DLL in c++ that will enable ...