I was able to use the following syntax:
I copied that straight from the example page I posted earlier. What is your goal? What kind of kernel do you want to create?
using (MagickImage image = new MagickImage("logo:")) { image.Morphology(MorphologyMethod.Close, "3: 0.3,0.6,0.3 0.6,1.0,0.6 0.3,0.6,0.3"); }