CheckUniqueUserIDTask.cs :  » Network-Clients » iReaper » IReaper » Initializer » C# / CSharp Open Source

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

namespace IReaper.Initializer{
    //
    public class CheckUniqueUserIDTask:AbstractInitTask
    {
        protected override void JobContent()
        {
            string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "iReaper");
            if (!Directory.Exists(path))
            {
                try
                {
                    Directory.CreateDirectory(path);
                }
                catch
                {
                    return;
                }
            }
            Properties.Settings.Default.UserID = GenerateUserID(path);
        }

        private Guid GenerateUserID(string Dir)
        {
            string path = Path.Combine(Dir, ".user");
            try
            {
                //Guid
                if (!File.Exists(path))
                {
                    Guid userID = Guid.NewGuid();
                    File.WriteAllBytes(path, userID.ToByteArray());
                    return userID;
                }
                else
                {
                    byte[] buffer = File.ReadAllBytes(path);
                    Guid userID = new Guid(buffer);
                    return userID;
                }
            }
            catch
            {
                return Guid.Empty;
            }
        }

    }
}