using MSComctlLib;
 
Node NodX; 
 
private void Form1_Load(object sender, EventArgs e) 
{ Object m = Type.Missing; 
Object i = "India"; 
NodX = axTreeView1.Nodes.Add(ref m, ref m, ref i, ref i, ref m, ref m); 
 
Object k = "Kerala"; Object rel = TreeRelationshipConstants.tvwChild; 
NodX = axTreeView1.Nodes.Add(ref i, ref rel, ref k, ref k, ref m, ref m); 
 
Object ka = "Karnataka"; 
NodX = axTreeView1.Nodes.Add(ref i, ref rel, ref ka, ref ka, ref m, ref m); Object ko = "Kochi"; NodX = axTreeView1.Nodes.Add(ref k, ref rel, ref ko, ref ko, ref m, ref m); 
NodX.EnsureVisible(); 
}