Our .exe application can be controlled by an external program using OLE
Automation.  We have a sample C# .exe program (using c# VisualStudio.NET
2003) that launches our application (via automation) and makes various
successful automation calls.

I hava a method(say MyMethod) in a non-COM dll, and my .net code needs to
use PIvoke to call this method. MyMethod takes 2 parameters, the first one is
a string  used to pass in the username, and the 2nd is the processed
string(used for a return value). And MyMethod returns void. ...

rather than
    Declare Function initscr Lib "stringpathto.dll" () As IntPtr
is there a way of using a constant similar to the following (which doesnt
work..)

Using VB .NET 2003.
Is it possible to call a program like NotePad from my program without
resorting to APIs?
I can not seem to get a good method for this.  Sample function would be

I have a quite severe problem. I am trying to compile a C++ library
initially written for VC++ 6. To make the library available for .NET
languages I want to compile the library as managed C++ library. As the
library is utilizing DirectX 9 it bases on COM. This causes me quite some

I'm trying to use VB.NET to create an application that will create a new
workbook and worksheet in Excel.  Having achieved that, I am trying to find
advice about how to create a Command Button on an Excel Spreadsheet and
control it's properties.  I have used:

My simple problem is that when I use either RegAsm or TlbExp on a .NET Assembly,
the TypeLib created doesn't contain any methods.  Only my classes are in there.
I'm assuming this is just my inexperience in using COM Interop?
Any help appreciated.

I want to call an unmanaged API which uses a LPBYTE.  I have to allocate the
space for the byte data first and pass it to the API.  How do I call this in
C#?
From:

ActiveX "iGrid" not intercop in VB.NET.
Why ?

I have made a dll in unmanaged C++ code using Visual Studio.Net 2003. I
would like to access C# functions or class methods from this dll. The C#
code would be in an other dll.
Typically, the C++ code does shell interaction, while the C# part is a

I'm trying to develop an ASP.NET application that uses a third-party COM
dll.  I've added a reference to the dll in the web app project along with
adding a "using" directive in the code-behind (referencing the COM
namespace).  Every time I try and run the application and call ...

Is this a regasm bug or does anyone have an explanation to this behaviour?
I have a com dll that defines additional "Implemented Categories".
When I register with regasm they are defined in the registry as expected.
When I try to create a registry file with the corresponding ...

I'm trying to automate excel 2000 from c# .NET.  I also need for my code to
work on Excel 2000 and 2003.  Since there are no PIAs available for office
2000, what steps do I need to follow to create my own interop assembly for
excel 2000.  I'm assuming that once I link to this ...

I am attempting to setup an API that will bridge managed code into an older legacy system. When I follow the directions in MSKB 817248 on exposing a .NET Assembly for COM Interop (or have VS.Net 2003 do it for me) it successfully registers the assembly in COM, however, i cannot ...

I need the help of the C++ gurus out there.  I have the following code, it's
working great, but I'm concern about the lack memory management I'm doing.  I
just want to confirm if I'm doing something wrong or my code is fine.  I
don't want to put this code in production and find ...