I am trying to use datepicker to select the start and end date range. How do i achieve this?
You could use two ion-datetime-buttons. Otherwise, if you are looking to select a range on the calendar picker itself, there is an open feature request for it. Here is a link to that issue linked to a comment with a possible working solution - feat: ion-datetime with date range · Issue #23572 · ionic-team/ionic-framework · GitHub.