public override void ExecuteResult(ControllerContext context)
{
string text = context.HttpContext.Request.ServerVariables["Query_String"];
if (text.Contains("&"))
{
text = text.Split(new char[]
{
'&'
})[0];
}
MvcCaptchaImage cachedCaptcha = MvcCaptchaImage.GetCachedCaptcha(text);
if (string.IsNullOrEmpty(text) || cachedCaptcha == null)
{
context.HttpContext.Response.StatusCode = 404;
context.HttpContext.Response.StatusDescription = "Not Found";
context.HttpContext.Response.End();
return;
}
cachedCaptcha.ResetText();
using (Bitmap bitmap = cachedCaptcha.RenderImage())
{
bitmap.Save(context.HttpContext.Response.OutputStream, ImageFormat.Gif);
}
context.HttpContext.Response.Cache.SetNoStore();
context.HttpContext.Response.Cache.SetCacheability(HttpCacheability.NoCache);
context.HttpContext.Response.ContentType = "image/gif";
context.HttpContext.Response.StatusCode = 200;
context.HttpContext.Response.StatusDescription = "OK";
context.HttpContext.ApplicationInstance.CompleteRequest();
}
