[UWP][XAML] ListView child item not using full width

Question

I\'m trying to display a list of bound items. I\'ve customized the datatemplate to be a grid and I want the right column (that has a fixed width) to stick to the right side

Answer 1

A friend helped me find this which means this question is now a duplicate since it's the same thing:

ListViewItem won't stretch to the width of a ListView

Just for clarity though, here was the takeaway code that solved my problem: