WebUI/AdminM/Category/ek_categoryList_old.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using HModel;
using Bll;
using System.Data;

namespace WebUI.AdminM
{
    public partial class ek_categoryList_old : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                if (Request.QueryString["cid"] != null)
                {
                    string cid = Request.QueryString["cid"].ToString();

                    DataTable dt = new DataTable();
                    dt.Columns.AddRange(
                         new DataColumn[]{
                         new DataColumn("id"),
                         new DataColumn("title"),
                         new DataColumn("channel_id"),
                         new DataColumn("parent_id")
                         }); 
                    //DataRow dr = dt.NewRow();
                    //dr["id"] = tid;
                    //dr["title"] = "父类";
                    //dr["channel_id"] = "0"; 
                    //dr["parent_id"] = "0";
                    //dt.Rows.Add(dr);

                    List<ek_category> list = Bll_ek_category.GetEntityListByWhere(ek_category._.parent_id == cid);

                    GetTree(list, dt);
                    gvData.DataSource = dt;
                    gvData.DataBind();

                }

                 
            }

        }
        public DataTable GetTree(List<ek_category> list, DataTable dt)
        {

            foreach (ek_category c in list)
            {
                DataRow dr = dt.NewRow();
                dr["id"] = c.id;
                string str = "";
                for (int i = 0; i < c.class_layer; i++)
                {
                    str += "&nbsp;&nbsp;&nbsp;&nbsp; ";