Database, transactions, tree item lazarus / 16-Databases ---------------------------------------------------------------------- Человек_Борща · 2015-06-15 13:59 Greetings! I'm realize tree structure of data e.g. Item 0 Item 1 Group 1  - Item 1  - Group 1  - - Item 4 Using SQLQuery I've fill VirtualStringTree, but which way I need realize to do adding, editing items in tree using DB-controls, and not SQL queries? e.g. before edit I query all data of item from table and fill standart non-DB controls, for update data, I'm agan make SQL query requst... I's possible use DB-controls for add, modify items from tree?