asp.net treeView綁定

這個東西不是什么復雜的東西， 幫著小兄弟寫個Demo, 實現個Binding

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public partial class _Default : System.Web.UI.Page
{
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? Bind();
??????? }
??? }

??? private List<User> GetData()
??? {
??????? List<User> list = new List<User>();
??????? list.Add(new User() { id = 1, Name = "root", ParentID = 0 });
??????? list.Add(new User() { id = 2, Name = "1", ParentID = 1 });
??????? list.Add(new User() { id = 3, Name = "1.1", ParentID = 2 });
??????? list.Add(new User() { id = 4, Name = "1.2", ParentID = 2 });
??????? list.Add(new User() { id = 5, Name = "2", ParentID = 1 });
??????? list.Add(new User() { id = 6, Name = "2.1", ParentID = 5 });

??????? return list;

??? }

??? private void Bind()
??? {
??????? DataTable dt = new DataTable();
??????? //這個是我獲取數據源的代碼
??????? dt.Columns.Add("ID");
??????? dt.Columns.Add("Name");
??????? dt.Columns.Add("ParentID");
??????? dt.Columns.Add("URL");
??????? foreach (User item in GetData())
??????? {
??????????? DataRow dr = dt.NewRow();
??????????? object[] objs = { item.id, item.Name, item.ParentID };
??????????? dr.ItemArray = objs;
??????????? dt.Rows.Add(dr);

??????? }

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??????? DataView dv = dt.DefaultView;
??????? dv.RowFilter = "parentId = 0";
??????? foreach (DataRowView drv in dv)
??????? {
??????????? TreeNode RootNode = new TreeNode(drv.Row["Name"].ToString(), drv.Row["Id"].ToString());
??????????? BuildNode(dt, RootNode);
??????????? this.TreeView1.Nodes.Add(RootNode);
??????? }
??? }

??? void BuildNode(DataTable dt, TreeNode node)
??? {
??????? DataView dv = dt.DefaultView;
??????? dv.RowFilter = "parentId =" + node.Value;
??????? foreach (DataRowView drv in dv)
??????? {
??????????? TreeNode ChildNode = new TreeNode(drv.Row["Name"].ToString(), drv.Row["Id"].ToString());
??????????? BuildNode(dt, ChildNode);
??????????? node.ChildNodes.Add(ChildNode);
??????? }
??? }
}

public class User
{
??? public int id { set; get; }

??? public string Name { set; get; }

??? public int ParentID { set; get; }

??? public string? URL { set; get; }
}

他們非喜歡DataTable, 米有辦法， 墨跡了一點