public ActionResult GetCaptchaImage(string fgcolor, string bgcolor, string ncolor)
{
var context = System.Web.HttpContext.Current;
context.Response.Cache.VaryByParams["fgcolor"] = true;
context.Response.Cache.VaryByParams["bgcolor"] = true;
context.Response.Cache.VaryByParams["ncolor"] = true;
DoCacheMagic(context, 3);
Color f = ColorTranslator.FromHtml(CaptchaImage.FGColorDef);
Color b = ColorTranslator.FromHtml(CaptchaImage.BGColorDef);
Color n = ColorTranslator.FromHtml(CaptchaImage.NColorDef);
Bitmap bmpCaptcha = CaptchaImage.GetCaptchaImage(f, b, n);
if (bmpCaptcha == null)
{
Response.StatusCode = 404;
Response.StatusDescription = "Not Found";
byte[] bb = new byte[0];
return(File(bb, "image/png"));
}
bmpCaptcha.Save(stream, ImageFormat.Png);
bmpCaptcha.Dispose();
return(File(stream.ToArray(), "image/png"));
}
public ActionResult GetCaptchaImage(string fgcolor, string bgcolor, string ncolor)
{
Color f = ColorTranslator.FromHtml(CaptchaImage.FGColorDef);
Color b = ColorTranslator.FromHtml(CaptchaImage.BGColorDef);
Color n = ColorTranslator.FromHtml(CaptchaImage.NColorDef);
Bitmap bmpCaptcha = CaptchaImage.GetCaptchaImage(f, b, n);
if (bmpCaptcha == null)
{
Response.StatusCode = 404;
Response.StatusDescription = "Not Found";
byte[] bb = new byte[0];
return(File(bb, "image/png"));
}
using (MemoryStream imgStream = new MemoryStream()) {
bmpCaptcha.Save(imgStream, ImageFormat.Png);
bmpCaptcha.Dispose();
Response.StatusCode = 200;
Response.StatusDescription = "OK";
return(File(imgStream.ToArray(), "image/png"));
}
}