Hi all

I have 2 jpeg file, a bigger one and a smaller one, both is created and export by Adode Photoshop with maximum quality (12)

(the content of the 2 jpg is quite simple, just some colored text)

But when try to overlay the smaller image onto the bigger image (by GDI+), the DrawImage did lost quality.

(I aslo DrawString in colorful within the bigger JPG but the quality is nice). Below is my code

		System.Drawing.Image result = Bitmap.FromFile(...............);
		Graphics g = Graphics.FromImage(result);

		g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
		g.PixelOffsetMode = PixelOffsetMode.HighQuality;
		g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
		g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
		g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;

		EncoderParameters encoderParams = new EncoderParameters(1);
		encoderParams.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, (long)100);

		ImageCodecInfo[] imageCodecInfoArray = ImageCodecInfo.GetImageEncoders();
		ImageCodecInfo imageCodecInfo = null;
		for (int i = 0; i < imageCodecInfoArray.Length; i++)
		{
			if (imageCodecInfoArray[i].MimeType == "image/jpeg")
				imageCodecInfo = imageCodecInfoArray[i];
		}

		System.Drawing.Image smallImage = Bitmap.FromFile(...);
		g.DrawImage(smallImage, new Point(0, 0));



		Response.Clear();
		Response.ClearHeaders();
		Response.ClearContent();
		Response.ContentType = "image/jpeg";
		Response.AddHeader("Content-Disposition", "inline;filename=test.jpg");
		result.Save(Response.OutputStream, imageCodecInfo, encoderParams);
		result.Dispose();
		Response.Flush();
		Response.End();

Can Anyone help

Thanks