ASP.NET TreeView并选择所选节点

using System.Data;
using System.Web.UI.WebControls;

public class HomeController : Controller
{
    public ActionResult Index()
    {
        // Create an instance of a new DataTable
        DataTable dataTable = new DataTable();
        dataTable.Columns.Add("ID", typeof(int));
        dataTable.Columns.Add("Text", typeof(string));
        dataTable.Columns.Add("ParentID", typeof(int));

        // Add some data to the data table
        dataTable.Rows.Add(1, "Item 1", null);
        dataTable.Rows.Add(2, "Item 2", 1);
        dataTable.Rows.Add(3, "Item 3", 2);
        dataTable.Rows.Add(4, "Item 4", 2);
        dataTable.Rows.Add(5, "Item 5", 3);

        // Set the data table as the DataSource for the TreeView
        TreeView treeView = new TreeView();
        treeView.DataSource = dataTable;
        treeView.DataBind();

        // Render the TreeView
        ViewBag.TreeView = treeView;
        return View();
    }
}