ConsoleDownloader

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Net;

namespace TestDownload
{
    class Program
    {
        static string fileInProgress = string.Empty;
        static void Main(string[] args)
        {
            Console.CancelKeyPress += new ConsoleCancelEventHandler(Console_CancelKeyPress);

            List<string> fileurls = new List<string>();
            string[] files = Directory.GetFiles(@"E:\Edu\Books\Books");
            int count = 0;
            foreach (string filename in files)
            {
                FileInfo fn = new FileInfo(filename);
                count++;
                fileurls.Add("http://192.168.2.4/" + fn.Name);
            }

            foreach (string url in fileurls)
            {
                fileInProgress = url.Substring(url.LastIndexOf("/") + 1, (url.Length - url.LastIndexOf("/") - 1));
                DownloadFile(url, fileInProgress);
            }
        }

        static void Console_CancelKeyPress(object sender, ConsoleCancelEventArgs e)
        {
            try
            {
                Console.ForegroundColor = ConsoleColor.Yellow;
                Console.WriteLine("Program interrupted..deleting corrupted file");
                Console.ResetColor();
                if (File.Exists(fileInProgress))
                {
                    while (IsFileLocked(fileInProgress))
                    {
                        System.Threading.Thread.Sleep(1000);
                    }
                    File.Delete(fileInProgress);
                }
            }
            catch
            {
                Console.WriteLine("Error occured.");
            }
        }

        private static bool IsFileLocked(string fileName_in)
        {
            FileInfo inpFileInfo = new FileInfo(fileName_in);
            FileStream stream = null;
            try
            {
                stream = inpFileInfo.Open(FileMode.Open, FileAccess.ReadWrite, FileShare.None);
            }
            catch (IOException)
            {
                //the file is unavailable because it is:
                //still being written to
                //or being processed by another thread
                //or does not exist (has already been processed)
                return true;
            }
            finally
            {
                if (stream != null)
                    stream.Close();
            }

            //file is not locked
            return false;
        }

        private static void DownloadFile(string url, string fileInProgress)
        {
            try
            {
                Console.WriteLine("Downloading " + fileInProgress);
                WebClient wb = new WebClient();
                wb.DownloadFile(new Uri(url), fileInProgress);
            }
            catch (WebException webexp)
            {
                if (File.Exists(fileInProgress))
                {
                    File.Delete(fileInProgress);
                }
                Console.WriteLine("Error occured while downloading " + fileInProgress + "\n Msg -" + webexp.ToString());
            }
            catch (NotSupportedException nsExp)
            {
                if (File.Exists(fileInProgress))
                {
                    File.Delete(fileInProgress);
                }
                Console.WriteLine("Error occured while downloading " + fileInProgress + "\n Msg -" + nsExp.ToString());
            }
        }
    }
}