標籤：
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Reflection;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace EasyUITree
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
List<tree> listTreeAll = new List<tree>();
tree treeAll = new tree();
public tree BindNew(tree node)
{
DataTable dr = GetReader(node.id);
tree n = new tree();
for (int i = 0; i < dr.Rows.Count; i++)
{
if (Convert.ToInt32(dr.Rows[i]["pid"]) == 0)
{
n.id = Convert.ToInt32(dr.Rows[i]["id"]);
n.text = dr.Rows[i]["text"].ToString();
n.pid = Convert.ToInt32(dr.Rows[i]["pid"]);
n.child = GetChild(n);
}
}
return n;
}
public List<tree> GetChild(tree node)
{
DataTable dr = GetReader(node.id);
List<tree> child = new List<tree>();
for (int i = 0; i < dr.Rows.Count; i++)
{
tree n = new tree();
n.id = Convert.ToInt32(dr.Rows[i]["id"]);
n.text = dr.Rows[i]["text"].ToString();
n.pid = Convert.ToInt32(dr.Rows[i]["pid"]);
child.Add(n);
DataTable dr1 = GetReader(n.id);
if (dr1 != null)
{
n.child = GetChild(n);
}
}
return child;
}
/// <summary>
/// 測試
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Button1_Click(object sender, EventArgs e)
{
tree model = new tree();
model.id = 0;
BindNew(model);//遞迴
List<tree> list = new List<tree>();
list.Add(BindNew(model));
}
public DataTable GetReader(int pid)
{
string sql = " select * from t_tree where pid = " + pid + " "; //where pid = " + pid + " ";
string ConnectionString = "uid=sa;pwd=qazwsx;initial catalog=TestDBase;data source=DESKTOP-HKIRA54;Connect Timeout=900";
using (SqlConnection con = new SqlConnection(ConnectionString))
{
SqlCommand cmd = new SqlCommand(sql, con);
con.Open();
DataSet ds = new DataSet();
SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = cmd;
adapter.Fill(ds);
DataTable table = ds.Tables[0];
return table;
}
}
}
public class tree
{
public int id { get; set; }
public string text { get; set; }
public int pid { get; set; }
public List<tree> child { get; set; }
}
C# 最原始的tree 遞迴使用
