public ActionResult Captcha(int imageWidth = 200, int imageHeight = 45)
{
var code = "";
var images = _captchaService.GetValidationImage(out code, imageWidth, imageHeight);
var setting = _settingService.GetCustomerSettings();
Session[setting.CaptchaName] = code;
return(File(images, @"image/jpeg")); //返回验证码图片
}
