Comments on: A Beginner’s Guide to calling a .NET Library from Excel

By: efo

efo — Mon, 21 Dec 2009 02:30:19 +0000

This guide I need, I was looking at google no one expected, this guide that I need thanks

By: Sohail Razzaq

Sohail Razzaq — Tue, 06 Oct 2009 12:34:43 +0000

A very interesting article indeed. Specially you solved my problem by creating the config file for Excel.exe.

I am having problems with building an installer for this dll to deploy somewhere. if you could help.

By: Scott

Scott — Wed, 23 Sep 2009 13:17:25 +0000

First of all Very good tutorial. It is clear you understand this very well, I’m hoping you also understand my similar problem and can point me in the right direction.

I am working with Visual Studio 2008 VB .net and Excel 2003 (and 2007 but that’s another problem)
I would like to know what it would take to build a “Self-Registering” dll which contains an or multiple object which can be placed within the excel sheets as ole objects.

Thanks in advance.

By: Kethepalli

Kethepalli — Tue, 22 Sep 2009 16:33:18 +0000

This answer for Rakesh. Sorry for confusion.

By: Kethepalli

Kethepalli — Tue, 22 Sep 2009 16:31:30 +0000

I created a class that holds the array collection. We just need to return the class object after populating the arrays.

Clase aArr
{
double [] abc;

private setValue(double[] values)
{
this.abc = values;
}
}

caller Code

aArr objArr = new aArr();
objArr.SetValue(PopulateddoubleArray);
return objArr;

Hope this helps you.

By: Bob N

Bob N — Thu, 20 Aug 2009 14:28:16 +0000

The Excel.exe.config issue had me pulling my hair out! Thanks much!!

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By: Rakesh

Rakesh — Fri, 24 Apr 2009 15:32:48 +0000

I was able to implement this But the proble is when You try to retrun an array or Object It throw you and Exception on VBA side. Has anybody tried to implement that. Here;s My code.
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Reflection;

[assembly: ComVisible(true)]
[assembly: Guid("37496b5c-462a-4547-b57e-d9063256e443")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]

namespace ExcelFunc
{
[ClassInterface(ClassInterfaceType.AutoDual)]
public class Functions
{
public double[] Add(double a, double b)
{
double[] ar = new double[1];
ar[0] = a + b;
return ar;
}
}
}

Function add_num()
Dim f As New Functions
Dim x() As Double
x = f.Add(1, 1)
End Function

By: Sergey

Sergey — Thu, 16 Apr 2009 12:34:41 +0000

Indeed, the best article in order to get started with C# Excel interaction. However, one minor point is missing. How to handle events if they fired in C#? Solution to that may allow to utilize multi threading in C# and do calls asynchroniously from Excel. So far I found nothing on this subject. Any suggestions?

Thanks again,
Sergey

By: Shri

Shri — Sat, 14 Feb 2009 21:47:10 +0000

I forgot mention, I am using VS2008 with .Net 3.5 SP1. I also strong named my assembly, so that issue should not be there.