/// <summary>
/// 获取验证码
/// </summary>
/// <returns></returns>
public ActionResult GetCaptchaCode()
{
CaptchaCode code = new CaptchaCode();
if (Session["CaptchaCode"] == null)
{
Session.Add("CaptchaCode", code.Text);
}
else
{
Session["CaptchaCode"] = code.Text;
}
return(File(code.RenderImage(), @"image/jpeg"));
}
private static MvcHtmlString GetCaptchaCode(this HtmlHelper helper, string actionName, string controllerName, CaptchaOptions options)
{
if (options == null)
{
options = new CaptchaOptions();
}
var image = new CaptchaCode(options);
HttpContext.Current.Session.Add(
"CaptchaCode",
image);
var url = new UrlHelper(helper.ViewContext.RequestContext);
var sb = new StringBuilder(1500);
const string copyrightText = "\r\n<!-- MyCaptcha 1.0 @Leiyang -->\r\n";
sb.Append(copyrightText);
sb.Append(CreateImgTag(options));
sb.Append(copyrightText);
return(MvcHtmlString.Create(sb.ToString()));
}