Tip: Maak met behulp onderstaande code van een bestaand image een 200x200 thumbnail.
public void GenerateThumbNail ( string path, string filenameSource, string filenameTarget )
{
System.Drawing.Image source = System.Drawing.Image.FromFile(path + @"\" + filenameSource);
System.Drawing.Image target = new Bitmap( 200, 200, source.PixelFormat );
Graphics gfx = Graphics.FromImage( target );
Rectangle rec = new Rectangle( 0, 0, 200, 200 );
gfx.DrawImage( source, rec );
target.Save(path + @"\" + filenameTarget, System.Drawing.Imaging.ImageFormat.Bmp);
source .Dispose();
}