/// <summary>
/// 生成验证码图片
/// </summary>
/// <returns></returns>
public ActionResult validcode()
{
string strRandon = Common.ValidCodeUtils.GetRandomCode(4); //生成一个随机字符串 验证码
Session["validcode"] = strRandon; //将验证码放入Session
byte[] robyty = ValidCodeUtils.CreateImage(strRandon); //byte[] 根据验证码生成图片
return(File(robyty, @"image/jpeg"));
}
public ActionResult CreateValidCodeImage()
{
//生成长度为5的随机验证码字符串
var strRandom = ValidCodeUtils.GetRandomCode(5);
//根据生成的验证码字符串生成图片
byte[] byteImg = ValidCodeUtils.CreateImage(strRandom);
//将验证码字符串存入sessiona
//ViewData["validCode"] = strRandom;
HttpContext.Session.SetString("validCode", strRandom);
//把图片返回视图
return(File(byteImg, @"image/jepg"));
}