ASP.NET: Search inside treeview nodes

Question

I have a treeview with some nodes

--Parent
  --Child-0
    --child-0.0
    --child-0.1
    --child-0.2
    --child-0.3
  --Child-1
  --Child-2

I am updating this treeview later on, how can u update/insert values into child-0.2 programmatically where i don't know how many child does Child-0 has?

Tried following code, but compiler doesn't like it

foreach (TreeNode n in Treeview1.Nodes[0].ChildNodes[0])
{
   //whats the syntax gonna be?
}

Answer 1

int childrenCount = Treeview1.Nodes[0].ChildNodes[0].ChildNodes.Count;