public void MakeTransparent(Color transparentColor)
{
// Make all the frames transparent.
for (int f = 0; f < dgImage.NumFrames; f++)
{
Frame frame = dgImage.GetFrame(f);
int color = transparentColor.ToArgb();
if (!Image.IsAlphaPixelFormat(PixelFormat))
{
// Remove the alpha component.
color = color & 0x00FFFFFF;
}
frame.MakeTransparent(color);
}
}
