一个会员分红结算，以二叉树形式显示出来他的安置图，还可查看推荐图

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class 查看会员分红 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
this.Panel1.Enabled=false;
}

}
protected void Butnanzhi_Click(object sender, EventArgs e)
{
this.Panel1.Enabled = true;
this.Label3.Text = "您要查看的安置关系如下：";
string str = this.TextBox1.Text;

SqlConnection con = DB.creation();
con.Open();
SqlCommand cmd = new SqlCommand("select Hyname from huiyuan where HyID='"+str+"'",con);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
this.TextBox2.Text = dr["Hyname"].ToString();
}
TreeNode tn = new TreeNode();
tn.Text = str;
tn=fillnode(tn);
this.TreeView1.Nodes.Add(tn);
this.TextBox1.Text = "";
this.TextBox1.Focus();

}
public TreeNode fillnode(TreeNode tn)//递归
{
SqlConnection con = DB.creation();
con.Open();

SqlDataAdapter sda = new SqlDataAdapter("select LID,RID from huiyuan where HyID='" + tn.Text + "'", con);
DataSet ds = new DataSet();
sda.Fill(ds);
con.Close();
if (ds.Tables[0].Rows.Count>0)
{
if (!Convert.IsDBNull(ds.Tables[0].Rows[0]["lid"]))
{
TreeNode tnl = new TreeNode();

tnl.Text = ds.Tables[0].Rows[0]["lid"].ToString();
tnl = fillnode(tnl);
tn.ChildNodes.Add(tnl);
}
if (!Convert.IsDBNull(ds.Tables[0].Rows[0]["rid"]))
{
TreeNode tnr = new TreeNode();
tnr.Text = ds.Tables[0].Rows[0]["rid"].ToString();
tnr = fillnode(tnr);
tn.ChildNodes.Add(tnr);
}
}
return tn;

}
protected void Butntuijian_Click(object sender, EventArgs e)
{
this.Panel1.Enabled = true;
this.Label3.Text = "您要查看的推荐关系如下：";
string str = this.TextBox1.Text;
SqlConnection con = DB.creation();
con.Open();
SqlCommand cmd = new SqlCommand("select Hyname from huiyuan where HyID='"+str+"'",con);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
this.TextBox2.Text = dr["Hyname"].ToString();
}
TreeNode tnh = new TreeNode();
tnh.Text = str;
tnh = fillnode1(tnh);
this.TreeView1.Nodes.Add(tnh);
this.TextBox1.Text = "";
this.TextBox1.Focus();
}
public TreeNode fillnode1(TreeNode tnh )
{
SqlConnection con = DB.creation();
con.Open();
SqlCommand cmd=new SqlCommand ("select HyID from huiyuan where Hytjrid='"+tnh.Text+"'",con);
SqlDataReader dr= cmd.ExecuteReader();
while (dr.Read())
{
if (!Convert.IsDBNull(dr["hyID"]))
{
TreeNode tnr = new TreeNode();
tnr.Text = dr["HyID"].ToString();

tnh.ChildNodes.Add(tnr);
}

}
return tnh;

}
}