Solved

deploy com-enable C# ,.Net dll to workstation

Posted on 2014-03-07
1
643 Views
Last Modified: 2014-03-07
I am trying to write a com-enabled .Net DLL in C#, using the .Net 3.5 framework, and on my development machine I can use it in VBA (Excel) like this:

Public Sub try()
    Dim CR As CRPassThroughCOM.Main
    Set CR = New CRPassThroughCOM.Main
   
    Dim tryit As Boolean
    tryit = CR.Report
   
   
   
End Sub

I did notice that when I added the dll to the references, that it pointed to the debug folder, not the release folder.

I then sent the dll (from the release folder) to a personal machine that does not have the development environment.  I registered it with regasm, which on that machine was in the .Net 4.0 framework folder.  I used the /tlb and /codebase switches.

On the personal machine, in Excel VBA I can choose the reference, etc.  However, at tryit = CR.Report, it fails.  Intellisense does not see that method and it won't run.

The DLL looks like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace CRPassThroughCOM
{
    public interface IMain
    {
        bool Report();
    }

    [ComVisible(true)]
    [ClassInterface(ClassInterfaceType.None)]
    public class Main : IMain
    {

        public Main()
        {
        }


        [ComVisible(true)]
        public bool Report()
        {
            try
            {
                MessageBox.Show("We are good, I guess");
                return true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);//TODO: take this out
                return false;
            }
        }
    }
}

Any ideas what I can do to troubleshoot this?  I had to mark the assembly Make Assembly com-Visible to get this method to show up even on the development machine.

Thanks
0
Comment
Question by:g_johnson
1 Comment
 
LVL 4

Accepted Solution

by:
g_johnson earned 0 total points
ID: 39913607
I added in the Guids, and this now works.

    [Guid("62021e3e-5a49-4ccb-b059-3cd1a1421390")]
    public interface IMain
    {
        bool Report();
    }

    [Guid("a5295c27-8054-422b-a6ef-12670a890062")]
    [ComVisible(true)]
    [ClassInterface(ClassInterfaceType.None)]
    public class Main : IMain
    {
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

789 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question