The overload parameter of the GetNodeByHierarchicalIndex
method is an array, which represents the hierarchical index of the node as sequence of numbers in the RadOrgChart hierarchy. To clarify more I will give you an example (please review the attachment).
Regarding your second question. RadOrgChart exposes only GetNodeByHierarchicalIndex
method for getting nodes. I implemented for your case a method which returns nodes by a certain criteria. We are going to add that method into RadOrgChart server's API.
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