asp.net treeView绑定

这个东西不是什么复杂的东西， 帮着小兄弟写个Demo, 实现个Binding

 

 

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();
        //这个是我获取数据源的代码
        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);

        }

 

        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; }
}

他们非喜欢DataTable, 米有办法， 墨迹了一点