New Post: Convert Pdf to Dcx just black and white color

Can you please give me a short code snippet (c#) what to do to convert a pdf File to a dcx with just black and white color. In older day I used command line option "convert.exe -map Colormap.pcx".
Now I would like to do it via code

            using (var image = new MagickImage("test.pdf")) 
            {

..... To Something .....

                image.Write("test.dcx");
            }