C#動態(tài)綁定treeview控件

    前臺只需要放一個 treeview控件就行
    后臺
    protected void Page_Load(object sender, EventArgs e)
    {
    if (!IsPostBack)
    bindTree();
    }
    private void bindTree()
    {
    DataTable dt = this.GetTreeData();
    this.FillNode(dt, null);
    }
    private void FillNode(DataTable dt, TreeNode node)
    {
    DataView dv = new DataView(dt);
    if (node == null) //根結(jié)點
    {
    dv.RowFilter = "parentid='0'"; //篩選到根結(jié)點的所有子節(jié)點
    }
    else //不是根結(jié)點
    {
    dv.RowFilter = "parentid='" + node.Value + "'"; //篩選對應(yīng)節(jié)點的所有子節(jié)點
    }
    foreach (DataRowView drv in dv) //遍歷填充節(jié)點的所有子節(jié)點，如果傳入的節(jié)點node為葉子節(jié)點，遍歷要退出，不再進行遞歸
    {
    TreeNode no = new TreeNode(drv["menuname"].ToString(), drv["menuid"].ToString());
    FillNode(dt, no); //填充no節(jié)點的子節(jié)點
    if (node == null)
    {
    this.TreeView1.Nodes.Add(no);
    }
    else
    {
    node.ChildNodes.Add(no);
    }
    }
    }
    private DataTable GetTreeData()
    {
    string strcnn = ConfigurationManager.ConnectionStrings["treecnn"].ConnectionString;
    using (SqlConnection sqlcnn = new SqlConnection(strcnn))
    {
    SqlCommand sqlcmm = sqlcnn.CreateCommand();
    sqlcmm.CommandText = "select * from MenuTree order by parentid,menuorder";
    SqlDataAdapter da = new SqlDataAdapter(sqlcmm);
    DataSet ds = new DataSet();
    da.Fill(ds);
    return ds.Tables[0];
    }
    }