I've seen several messages and read through them and MANY websites and
various MSDN items and still don't have a solution.

I made a dll in C# from the code below for testing

using System;
using System.Runtime.InteropServices; // necessary library to use COM
attributes

namespace mcMath
{
   /// <summary>
   /// Summary description for Class1.
   /// </summary>
   ///
   [ComVisible(true)]
   [ProgId("mcMath.mcMath")]
   [Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
   [ClassInterface(ClassInterfaceType.None)]

   public class mcMathComp
   {
       private bool bTest = false;

       public mcMathComp()
       {
           //
           // TODO: Add constructor logic here
           //
       }
       /// <summary>
       /// //This is a test method
       /// </summary>
       public void mcTestMethod()
       {

       }
       public long Add(long val1, long val2)
       {
           return val1 + val2;
       }
       /// <summary>
       /// //This is a test property
       /// </summary>
       public bool Extra
       {
           get
           {
               return bTest;
           }
           set
           {
               bTest = value;
           }
       }
   }
}

From the various sites and info I've read, I added the interop using
lline and also the three lines
   [ComVisible(true)]
   [ProgId("mcMath.mcMath")]
   [Guid("2A77EA02-8617-43a7-B5D9-1FE09153AC07")]
   [ClassInterface(ClassInterfaceType.None)]

The guid string I got from having the code for the dll open and going
to Tools > Create UID and chose Registry Format

I then dropped to command line and ran
C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug>C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\REGASM.exe
mcmath.dll /tlb:mcmath.pdb

After all that, I could finally see it to add it as a reference to a
vb6 app, but when I do, the actual methods aren't available.. only
thing I have are things like tostring and gethash ..

I did some more reading and found some info to do the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Documents and Settings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility.  Version2.0.50727.42
Copyright (c) Microsoft Corporation.  All rights reserved.

Failure adding assembly to the cache: Attempt to install an assembly
without a strong name
----

Did some more reading and then did the below

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>sn -k
"C:\Documents andSettings\Tony\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll"

Microsoft (R) .NET Framework Strong Name Utility  Version 2.0.50727.42
Copyright (c) Microsoft Corporation.  All rights reserved.

Key pair written to C:\Documents and Settings\Tonyk\My
Documents\Visual Studio
2005\Projects\mcmath\mcmath\bin\Debug\mcmath.dll
----

Great, I thought... Now I can do the gacutil again and be home free.
wrong... :(

C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin>gacutil.exe /i
"C:\Docum
ents and Settings\Tonyk\My Documents\Visual Studio
2005\Projects\mcmath\mcmath\b
in\Debug\mcmath.dll"
Microsoft (R) .NET Global Assembly Cache Utility.  Version
2.0.50727.42
Copyright (c) Microsoft Corporation.  All rights reserved.

Failure adding assembly to the cache:   The module was expected to
contain an assembly manifest.

---

After every task leading to another task in my effort to get a C# .dll
to run under VB6, I'm begining to think maybe I'm following the wrong
trail of bread crumbs and this should be a lot simplier than I'm
finding?


In the end, I'm looking to use a .Net component in C# and pop the code
into a .dll that a vb6 app can use

Help?

-Tony!-