listview checkbox checked on load wpf

How can i make certain listview column checkboxex to be checked on load. I have two listst of objects. First is with all objects that are in the listview, and the other one is with previoysly checked that are written in a file. When I load the form i get the List with objects from the file, and than I want to compare both and on base of that get checked the checkboxes of that listview.