private void DoCaptcha(HttpContext context)
{
Color f = ColorTranslator.FromHtml(CaptchaImage.FGColorDef);
Color b = ColorTranslator.FromHtml(CaptchaImage.BGColorDef);
Color n = ColorTranslator.FromHtml(CaptchaImage.NColorDef);
Bitmap captchaImg = CaptchaImage.GetCaptchaImage(f, b, n);
if (captchaImg == null)
{
context.Response.StatusCode = 404;
context.Response.StatusDescription = "Not Found";
context.ApplicationInstance.CompleteRequest();
return;
}
context.Response.ContentType = "image/x-png";
using (MemoryStream memStream = new MemoryStream()) {
captchaImg.Save(memStream, ImageFormat.Png);
memStream.WriteTo(context.Response.OutputStream);
}
context.Response.StatusCode = 200;
context.Response.StatusDescription = "OK";
context.ApplicationInstance.CompleteRequest();
captchaImg.Dispose();
context.Response.End();
}
private string GetCaptchaImageURI()
{
if (this.IsWebView)
{
return("/CarrotwareCaptcha.ashx?t=" + DateTime.Now.Ticks +
"&fgcolor=" + CaptchaImage.EncodeColor(ColorTranslator.ToHtml(this.ForeColor)) +
"&bgcolor=" + CaptchaImage.EncodeColor(ColorTranslator.ToHtml(this.BackColor)) +
"&ncolor=" + CaptchaImage.EncodeColor(ColorTranslator.ToHtml(this.NoiseColor)));
}
else
{
return("/CarrotwareCaptcha.ashx?t=" + DateTime.Now.Ticks);
}
}
public bool Validate()
{
this.IsValid = CaptchaImage.Validate(this.CaptchaText);
if (!this.IsValid)
{
this.ValidationMessage = this.IsNotValidMessage;
}
else
{
this.ValidationMessage = this.IsValidMessage;
}
return(this.IsValid);
}
