How to get the X & Y coordinates of a grid cell

Hi everyone,
I am looking for a way to get the coordinates of a Grid. In Xamarin.Android Native you can use the GridLayout.Spec and then GridLayout.InvokeSpec. I need to know how to do the same in Xamarin.Forms Cross Platform.
I need it to locate and move items in the grids dynamically (i.e. with clicked button)
thanks