Rename files which exported from x-app

main.cs

using System;
using System.Text.RegularExpressions;
using System.IO;

namespace RemameCS
{
    class Program
    {
        static void Main(string[] args)
        {
            string dir;
            string full_name;
            string dst_name;
            Regex rgx = new Regex("\\d+\\-");

            string tmp;
            for (int i = 0; i < args.Length; i++)
            {
                full_name = args[i];
                dir = Path.GetDirectoryName(full_name);
                tmp = rgx.Replace(Path.GetFileName(args[i]), "");
                dst_name = Path.Combine(dir, tmp);

                Console.WriteLine("{0} => {1}", full_name, dst_name);
                if (File.Exists(dst_name))
                {
                    Console.WriteLine("Error... File already exists.");
                }
                else {
                    File.Move(full_name, dst_name);
                }
            }
            Console.ReadKey();
        }
    }
}