手写验证码

手写验证码

Html：

                                    <div class="field">
                                        <input type="text" class="input input-big" name="code" placeholder="填写右侧的验证码" data-validate="required:请填写右侧的验证码" />
                                        <img src="/Login/ShowVCode" id="LoginCode" alt="" width="100" height="32" class="passcode" style="height:43px;cursor:pointer;" onclick="this.src=this.src+'?'">
                                    </div>
                                   
                                </div>

控制器：

   #region 验证码生成
        public ActionResult ShowVCode()
        {
            ValidateCode validateCode = new ValidateCode();
            string strCode = validateCode.CreateValidateCode(4);
            Session["VCode"] = strCode;
            byte[] imgBytes = validateCode.CreateValidateGraphic(strCode);
            return File(imgBytes, @"image/jpeg");
        }
        #endregion

在控制器上怎么接受到验证码：

#region 验证
        public ActionResult Logincode()
        {
        
            string strCode = Request["code"];//接收到的Code
            string sessionCode = Session["VCode"] as string;//生成的Code
            Session["VCode"] = null;
            if (string.IsNullOrEmpty(sessionCode))
            {
                //return Content("验证码失败");
                return Redirect("Index");
            }
            if (strCode == sessionCode)
            {
                // return Content("验证码正确");          
               // return Redirect("/Shopper/Index");
                return RedirectToAction("Index", "Shopper", new { name = UserName }); 
            }
            else
            {
                //return Content("验证码失败");
                return Redirect("Index");
            }
        }
        #endregion