How to add button to listview last Item and load more item on that button click.

In my Xamarin PCL project, I have a listview with custom cell. I am proving a list of data as listview itemsource. The list contain more than 500 data. I need to display 10 data at a time. The last cell will contain a button to view more data. On button click next set of 10 data needs to be inserted in the listview and the button needs to be moved to last cell. Can anyone help me with and example.

Thanks