using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Text;
using Bytescout.Spreadsheet;

namespace CopyPasteColumns
{
    class Program
    {
        static void Main(string[] args)
        {
            // Open spreadsheet from file
            Spreadsheet document = new Spreadsheet();
            document.LoadFromFile(@"example.xls");
            //document.LoadFromFile(@"d:\2\1\Bytescout\Spreadsheet SDK\TestCase\Formats.xls");

            // Get first worksheet
            Worksheet worksheet = document.Workbook.Worksheets[0];

            // Copy first two ("A-B") columns to the fourth ("D") column
            worksheet.Columns.CopyAndPaste(0, 1, 12);

            // Delete output file if exists
            if (File.Exists("changed.xls"))
            {
                File.Delete("changed.xls");
            }

            // Save document
            document.SaveAs("changed.xls");

            // Close spreadsheet
            document.Close();

            // Open generated XLS document in default program
            Process.Start("changed.xls");
        }
    }
}