How To Add Root Node In Tree View Dynamically Using Asp.net

Question

I Want To Bind DataTable To TreeView.I Have Written Following Code.Its Working Currently,Means It Displays All Data Of DataTable But No Root Node.

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Answer 1

// Suppress repainting the TreeView until all the objects have been created.
treeView1.BeginUpdate();

// Clear the TreeView each time the method is called.
treeView1.Nodes.Clear();

// create root node
TreeNode root = new TreeNode("Root");

// loop and add all child nodes to root node
foreach (DataRow r in dt.Rows)
{
    // create child node 
    // add to root node 
     root.Nodes.Add(child);
}

// add root node to tree view
treeView1.Nodes.Add(root);

// Begin repainting the TreeView.
treeView1.EndUpdate();