Creating CAPTCHA Image

Creating CAPTCHA Image CreatingCAPTCHAImage Creating CAPTCHA Image [C#] Utkarsh Shigihalli /PreviewSnippet.aspx?SnippetID=bd93d6ce-dc77-4059-a790-df858a0752e6 SurroundsWith

 rect.Width);
  // Set up the text format.
  StringFormat format = new StringFormat();
  format.Alignment = StringAlignment.Center;
  format.LineAlignment = StringAlignment.Center;
  // Create a path using the text and warp it randomly.
  GraphicsPath path = new GraphicsPath();
  path.AddString(
    this.text,
    font.FontFamily,
    (int) font.Style,
    font.Size, rect,
    format);
  float v = 4F;
  PointF[] points =
  {
    new PointF(
      this.random.Next(rect.Width) / v,
      this.random.Next(rect.Height) / v),
    new PointF(
      rect.Width - this.random.Next(rect.Width) / v,
      this.random.Next(rect.Height) / v),
    new PointF(
      this.random.Next(rect.Width) / v,
      rect.Height - this.random.Next(rect.Height) / v),
    new PointF(
      rect.Width - this.random.Next(rect.Width) / v,
      rect.Height - this.random.Next(rect.Height) / v)
  };
  Matrix matrix = new Matrix();
  matrix.Translate(0F, 0F);
  path.Warp(points, rect, matrix, WarpMode.Perspective, 0F);
  // Draw the text.
  hatchBrush = new HatchBrush(
    HatchStyle.LargeConfetti,
    Color.LightGray,
    Color.DarkGray);
  g.FillPath(hatchBrush, path);
  // Add some random noise.
  int m = Math.Max(rect.Width, rect.Height);
  for (int i = 0; i < (int) (rect.Width * rect.Height / 30F); i++)
  {
    int x = this.random.Next(rect.Width);
    int y = this.random.Next(rect.Height);
    int w = this.random.Next(m / 50);
    int h = this.random.Next(m / 50);
    g.FillEllipse(hatchBrush, x, y, w, h);
  }
  // Clean up.
  font.Dispose();
  hatchBrush.Dispose();
  g.Dispose();
  // Set the image.
  this.image = bitmap;
}

//Detail: http://www.brainjar.com/dotNet/CaptchaImage/]]>