Create data tree with c#

Grasshopper
2

The DataTree.Add() methods adds a single item to the tree. It works in this case because your tree constraint is object. Use AddRange() if you want to add a list of values.

Grasshopper.DataTree<int> tree = new Grasshopper.DataTree<int>();

tree.Add(10, new GH_Path(1));
tree.Add(20, new GH_Path(2));

r = tree;
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