using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.OleDb;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;

public partial class admin_news_range : MyWeb.config
{
    DataTable treeDt = new DataTable();
    const int LevelMax = MyWeb.news.KindLevelMax;  //分類層數

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack) {

            
            TreeTopology();
            BuildChild(0, TreeView2.Nodes);

        }
    }

    protected void TreeTopology()
    {
        MyWeb.sql sql = new MyWeb.sql();
        OleDbConnection sqlConn = sql.conn(db, p_name);
        try
        {
            sqlConn.Open();
            OleDbCommand sqlCmd = new OleDbCommand("", sqlConn);
            sqlCmd.CommandText = "SELECT num,kind,root FROM news_kind  ORDER BY root, range";
            treeDt = sql.dataTable(sqlCmd);
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
        finally
        {
            sqlConn.Close();
            sqlConn.Dispose();
        }
    }

    public void BuildChild(int RootUid, TreeNodeCollection Nodes, int Level=1)
    {
        DataTable dt = treeDt;
        foreach (DataRow row in dt.Rows)
        {
            if (row["root"].ToString() == RootUid.ToString())
            {
                TreeNode NewNode = new TreeNode();
                if (Convert.ToString(Request["num"]) == row["num"].ToString())
                {
                    NewNode.Text = "<b><font color=blue>" + row["kind"].ToString() + "</font></b>";
                }
                else
                {
                    NewNode.Text = row["kind"].ToString();
                }
                NewNode.NavigateUrl = Request.Url.AbsolutePath + "?num=" + row["num"].ToString();
                //NewNode.Target = "f_range";
                NewNode.Expand();
                Nodes.Add(NewNode);

                if (Level + 1<= LevelMax)
                {
                    BuildChild((int)row["num"], NewNode.ChildNodes, Level + 1);
                }
               
            }          
        }
    }


}