how get array of drawing in inkcanvas in wpf

Question

im basically wana make a project of microcontroller in which from inkcanvas what ever i draw , by sending drawing to microcontroller ,it will show on graphical lcd . as graphical lcd get "
const code char array[1024] = {
88, 160, 88, 160, 80, 16, 160, 96, 160,.....}" array as argument mean get array i.e array .. and display respected image on lcd . so problem is that i dnt understand how i get array of drawing in inkcanvas .plz gude me properly