public void VerifyImg(string length, string opt, string usefor)
{
int _length; //验证码长度
VerifyWordOptions _opt; //验证码选项
string verifycode; //验证码
if (String.IsNullOrEmpty(length) || !Regex.IsMatch(length, "^\\d+$"))
{
_length = 4;
}
else
{
_length = int.Parse(length);
}
if (String.IsNullOrEmpty(opt) || !Regex.IsMatch(opt, "^\\d$"))
{
_opt = VerifyWordOptions.Number;
}
else
{
_opt = (VerifyWordOptions)int.Parse(opt);
}
VerifyCode v = new VerifyCode();
v.AllowRepeat = false;
//显示验证码
v.RenderGraphicImage(_length, _opt, true, out verifycode, "Image/Jpeg");
//保存验证码
Session[String.Format("$cms.site_{0}_verifycode", this.OutputCntext.CurrentSite.SiteId.ToString())] = verifycode;
}
