using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using Excel;
class MainClass
{
[STAThread]
static void Main(string[] args)
{
Excel.Workbook MyWorkBook;
Excel.Worksheet MyWorkSheet;
string FileName = @"C:\Mybook.xls";
MyWorkBook = (Excel.Workbook)Marshal.BindToMoniker(FileName);
MyWorkSheet = (Excel.Worksheet)MyWorkBook.ActiveSheet;
System.Windows.Forms.Application.Run();
}
}