can I combine this activity that means if user click on dynamic button then first clear the list and then add data from tiny db, this must be every time when user click on dynamic btn
Try putting listview.clear block in the top of dynamic button.button click event.
Put call ColinTreeListView1.Clear block above set global new_list to create empty list block
Before hitting dynamic button , Do the Collin tree having any list ? If so again when will you add? Because as per your logic user need to click two clicks, after clicking button there won’t be anything in the screen si user may get fed up
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