how to make the items of expandable listview check/uncheckable

I have an expandablelistview that works fine. Now I want to export the data of expandable listview and I want the user to be able to choose (or check like there be a checkbox or something) which items of listview to export. How can I do that? Can anyone give me a solution please? I have searched the net but didn't find something useful.

P.S: I have an idea, Can I place a checkbox in explistview rows and set actions to them?

Thanks so much in advance