What is rootValue in TreeFrid?

[Stem]

The rootValue="1" in TreeGrid. What is it exactly?
Had trouble finding documentation for it, or what I found didn't explain this elaborately....


Thankyou

[Isomorphic]

Hi Stem,
The RootValue is doc'd here, and described further here.

In short - this property applies to trees where the data is linked hierachically by having a property on each node that points to the identifier of the parent node (the "parent" data model).
In this case the 'rootValue' for the tree represents the identifier for the top level node in the tree - so any nodes with their parent Id field set to the specified rootValue for the tree are known to be top level children in the tree (children of the root node).

Make sense?