Listview win8 xaml how to create columns?

Question

Hi I am trying to create 3 columns in a ListView.

I read this but I want to set the data in each column programtically in C#:

how to display data in rows and

Answer 1

Improved XAML of Seb Boulet's answer if you don't want to hard code the Width of the Item/Grid (responsive design):

Related topic: How to get a ListBox ItemTemplate to stretch horizontally the full width of the ListBox?