How do I append data in the listview with the help of blocks?

[ABG]

Here's a sample app showing how a ListView is only for viewing, and not the primary storage area for your data:

TinyDB functions

I took a couple of hours to whip a quick and sloppy TinyDB Contact list app with dictionaries. Here's a video of it at work ... (I used my phone's screen recorder, which unfortunately does not catch cursor actions.) Designer: [Designer] Components include: A list Picker to pick Contacts from a TinyDB TagList A text box to show the current ContactName or enter a new one A Horizontal Arrangement to present a contact Attribute and its value, and allow Enter of a new value A ListView (…