How to programmatically fill the value tree in a managed form 1C 8.3?

Question

1C

There is a general selection form in which there is a tree of values ​​that I want to fill out from a remote database with which I connect via COM.

How can I populate it so that the items are displayed in groups rather than a solid list? Wherever there is mention of this topic, people create a tree dynamically and populate it from a query. Is it possible to fill a tree without a request?

Answer 1

Yes, of course you can. The root of the tree and each subordinate row has a predefined "Rows" property of type "ValueTreeRowsCollection" that can be used to create, modify, and delete rows lower in the hierarchy. More details in the syntax helper.
I will add. You don't have a Value Tree on your form, but a FormDataTree. To transfer one object to another, you must first call FormAttributeToValue(), and after the tree is formed, return it to the form using ValueToFormAttribute().