How to call excel macros programmatically in C#?

Question

Hi,
I have a requirement where i need to call excel (2003) macros in C# program. Can anyone help me with a code snippet to do the same?
The excel macro function takes two input parameters? how can the parameters be passed?
Any code snippet to do the same in C# would be helpful.
Thanks.

Answer 1

Hey there, Sid.  I am tryin gto run your code, but I couldn't even gte it to fire.  Here's what I ahve now:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
namespace WindowsFormsApplication2
    public partial class Form1 : Form
        private void button1_Click(object sender, EventArgs e)
            //~~> Define your Excel Objects
            Excel.Application xlApp = new Excel.Application();
            Excel.Workbook xlWorkBook;
            //~~> Start Excel and open the workbook.
            xlWorkBook = xlApp.Workbooks.Open("C:\\Users\\Ryan\\Desktop\\Coding\\Microsoft Excel\\Work Samples\\Work Samples\\Historical Stock Prices.xlsb");
            //~~> Run the macros by supplying the necessary arguments
            xlApp.Run("ShowMsg", "Hello from C# Client", "Demo to run Excel macros from C#");
            //~~> Clean-up: Close the workbook
            xlWorkBook.Close(false);
            //~~> Quit the Excel Application
            xlApp.Quit();
            //~~> Clean Up
            releaseObject(xlApp);
            releaseObject(xlWorkBook);
        //~~> Release the objects
        private void releaseObject(object obj)
            try
                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                obj = null;
            catch (Exception ex)
                obj = null;
            finally
                GC.Collect();
When I hit the play button nothing happens.  When I hot F5 nothing happens.  Do you ahve any idea what I'm doing wrong.  I'd appreciate any advice with this!! 
Thanks!!
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