public ActionResult Verification()
{
Verification val = new Verification();
//获得四位的验证码
string valcode = val.CreateValidateCode(4);
//把验证码放入Session
Session["validatecode"] = valcode;
HttpCookie cookie = new HttpCookie("validatecode");
//把验证码放入客户端的cookie
cookie.Value = valcode;
Response.Cookies.Add(cookie);
//得到图片字节数组
byte[] images = val.CreateValidateGraphic(valcode);
return(File(images, "image/jpeg"));
}
