How to copy grayscale color to RGB channels

[liuhaitao827]

I have a grayscale image (gray.jpg). There is only one gray channel in gray.jpg.
Next, I created a new Image and try to copy gray channel of gray.jpg to new image's R G B channels.
Seems, Imagemagick's combine option can do it. But I don't find combine function in MagicK.Net.

Could you let me know, how to copy gray channel to RGB channels with MagicK.Net?
or Is it possible that convert gray.jpg to RGB image with same values in every channels?

thanks in advance!

[liuhaitao827]

found Combine function in MagickImageCollection class