DataTable dtBooksTitle = YourTableHere;
TreeNode tnBooks;
for(int i =0;i<dtBooksTitle.Rows.Count;i++)
{
tnMain = new TreeNodedtBooksTitle.Rows[i]["Books"].Tostring());
TreeViewControl1.Nodes.Add(tnMain);
}
private void TreeViewControl1_AfterSelect(object sender, TreeViewEventArgs e)
{
TreeNode tnselected = tvCPTHistory.SelectedNode;
string sName = tnselected.Name;
}