If you're referring to the compression quality of the saved JPEG yes you can.

The GDI+ FAQ has an article for that too :-))

http://www.bobpowell.net/jpeg_compression.htm

 thanx, it worked,

 can i control the quality of the result image?, because i notices that when internet explorer shows the image smaller it is shown in better quality then after resized by the code.

     i guess you mean this example:
     Bitmap bm = (Bitmap)Image.FromFile("myimage.jpg");

     Bitmap resized = new Bitmap((int)(0.3f*bm.Width),(int)(0.3f*bm.Height));

     Graphics g=Graphics.FromImage(resized);

     g.DrawImage(bm, new Rectangle(0,0,resized.Width,resized.Height),0,0,bm.Width,bm.Height,GraphicsUnit.Pixel);

     g.Dispose();

     resized.Save("resizedimage.jpg",ImageFormat.Jpeg);

       "Bob Powell [MVP]" <bob@_spamkiller_bobpowell.net> wrote in message news:Ov3dKRnNEHA.1956@TK2MSFTNGP10.phx.gbl...
       Read the GDI+ FAQ. This has articles that explain what you want to do.

       --
       Bob Powell [MVP]
       Visual C#, System.Drawing

       Image transition effects, automatic persistent configuration and
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       http://www.bobpowell.net/wellformed.htm

       Answer those GDI+ questions with the GDI+ FAQ
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         "z f" <zigi@info-scope.co.il> wrote in message news:%231fnEGkNEHA.3292@TK2MSFTNGP11.phx.gbl...
         Hi,

         I'm using asp-dot net to upload an image, and saving the image.
         i get the image object this way:
         System.Drawing.Image img = System.Drawing.Image.FromStream(file.PostedFile.InputStream);

         I also save thumbnail using
         System.Drawing.Image thumb = img.GetThumbnailImage(width,height,null,IntPtr.Zero);

         but i need to save a copy of the image with different size then the original image but larger then the thumbnail.
         if i try to use the GetThumbnailImage, with bigger size, i get low quality copy.

         trying to use the Graphics class I didn't find the way to convert the image size.
         Graphics g = Graphics.FromImage ( img );

         g.WhatFunctionShouldIUse to convert the image size?

         or how should it be done?

         TIA,

         z.