递归绑定TreeView

DataAccess.DT();是返回所有地区信息(返回类型DataTable)

#region 控件递归算法 private static DataTable dt = DataAccess.DT(); /// <summary> /// TreeView递归算法 /// </summary> /// <param name="f_id">父ID</param> /// <param name="tn">TreeView对象</param> public static void ControllerTestTree(string f_id, TreeNodeCollection tn) { foreach (DataRow item in dt.Rows) { if (item[3].ToString().Trim() == f_id) { TreeNode _treenode = new TreeNode(); _treenode.Text = item[2].ToString().Trim(); _treenode.Value = item[1].ToString().Trim(); _treenode.Expanded = false;/*不展开节点*/ tn.Add(_treenode); ControllerTestTree(item[1].ToString().Trim(), _treenode.ChildNodes); } } } #endregion

调用：

//******************控件递归*******************// protected void Button2_Click(object sender, EventArgs e) { ControllerTestTree("0", this.TreeView1.Nodes); this.TreeView1.Nodes[0].Expanded = true;/*展开第一级目录(节点)*/ }