PersonalBlog/PersonalBlog/Controllers/HomeController.cs

using PersonalBlog.App_Code;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace PersonalBlog.Controllers
{
    public class HomeController : Controller
    {
        // GET: Home
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult Blog()
        {
            return View();
        }

        public FileResult ValidCode()
        {
            ValidateCode __validateCode = new ValidateCode();
            string code = __validateCode.CreateVerifyCode();
            Session["validateCode"] = code;
            Bitmap __bm = __validateCode.CreateImageCode(code);
            byte[] bytes = Tools.ConvertHelper.BitmapToBytes(__bm);
            return File(bytes, @"image/Jpeg");
        }
    }
}