Hi Julia Shah,
You can use the Nodes property to obtain the immediate child nodes of a particular node. You could use it to traverse a particular node and calculate the total number of folders. You also need to use recursion in order to go deeper than the immediate child nodes. Here is a quick code snippet
public int CalculateSubFolders(RadTreeNode parent)
int result = 0;
foreach (RadTreeNode child in parent.Nodes)
if (IsFolder(child)) // This method determines if a node is a folder
result ++; // increment for the "child" node
result += CalculateSubFolders(child); //add the number of folders in the child node.
the Telerik team
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