public FileResult Captcha()
{
string num = Core.RandomTo.NumCode(4);
byte[] bytes = ImageTo.Captcha(num);
HttpContext.Session.SetString("captcha", Core.CalcTo.MD5(num.ToLower()));
return(File(bytes, "image/jpeg"));
}
/// <summary>
/// 注册验证码
/// </summary>
/// <returns></returns>
public FileResult RegisterCode()
{
//生成验证码
string num = RandomTo.NumCode(4);
HttpContext.Session.SetString("RegisterCode", num);
byte[] bytes = ImageTo.Captcha(num);
return(File(bytes, "image/jpeg"));
}