This is useful if we need to generate images on the fly.For example image verification at the registration time.
protected void Page_Load(object sender, EventArgs e)
{
Bitmap bitmap = new Bitmap(100, 100);
Graphics g = Graphics.FromImage(bitmap);
g.DrawString(Request.QueryString["text"] == null ? "wrong input" : Request.QueryString["text"], SystemFonts.DefaultFont, Brushes.Red, new PointF(0, 0));
bitmap.Save(Response.OutputStream, ImageFormat.Jpeg);
}
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