C#

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 System.Diagnostics;
using System.IO;

namespace FileDescription
{
    public partial class Form1 : Form
    {
        
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            GetFileDescription();
        }
        private void GetFileDescription()
        {
            string[] fileInfo = Directory.GetFiles(Environment.SystemDirectory);            

            foreach (string str in fileInfo)
            {
                if (str.ToString().Contains(".exe"))
                {
                    ListViewItem lvi = new ListViewItem();
                    FileVersionInfo myFileVersionInfo = FileVersionInfo.GetVersionInfo(str);
                    
                    lvi = lv.Items.Add(str);
                    lvi.SubItems.Add(myFileVersionInfo.FileDescription);
                }
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            lv.Columns.Add("File",200,HorizontalAlignment.Left);
            lv.Columns.Add("Description",400,HorizontalAlignment.Left);
        }

        private void openToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Process.Start(lv.SelectedItems[0].ToString());
        }

        
    }
}

if (int x MOD 5 ==0)