一、WinForm中TreeView数据绑定

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Data;
namespace CSDNDemoTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
DataSet ds_Department = getDataSet("部门表");
DataSet ds_Employees = getDataSet("用户表");
foreach (DataRow dr in ds_Department.Tables[0].Rows)
{
//部门表绑定，作为一级层次
TreeNode tn_origine = new TreeNode();
tn_origine.Text = dr["部门"].ToString();
this.treeView1.Nodes.Add(tn_origine);
//用户表绑定
DataRow[] dr_arr = ds_Employees.Tables[0].Select("bumenId="+int.Parse(dr["bumenId"].ToString()));
if (dr_arr.Length > 0)
{
foreach (DataRow dr_sub in dr_arr)
{
TreeNode tn_sub = new TreeNode();
tn_sub.Text = dr_sub["用户"].ToString();
tn_origine.Nodes.Add(tn_sub);
}
}
}
}
//获取数据集
public DataSet getDataSet(string tableName)
{
DataSet ds = new DataSet();
using (SqlConnection con = new SqlConnection("Data Source=localhost;uid=sa;pwd=saiyang;Database=CSDN"))
{
con.Open();
string strSQL = "select * from "+tableName;
using (SqlDataAdapter sda = new SqlDataAdapter(strSQL, con))
{
sda.Fill(ds);
}
}
return ds;
}
}
}

//实现多级目录
public string rootFT_Id = "00";//根节点Tag
// 添加根节点
private void AddRootCompany()
{
DataSet ds = new DataSet();
using (SqlConnection con = new SqlConnection("Data Source=localhost;uid=sa;pwd=;Database=TW_KJ"))
{
con.Open();
string strSQL = "select * from TB_Personnel_Type where FT_ID =" + rootFT_Id;
using (SqlDataAdapter adapter = new SqlDataAdapter(strSQL, con))
{
adapter.Fill(ds);
}
TreeNode NewNode = new TreeNode();
NewNode.Text = ds.Tables[0].Rows[0]["FT_NAME"].ToString().Trim();
this.treeView1.Nodes.Add(NewNode);
InitTreeCompanyChildNode(NewNode, rootFT_Id);
}
}

public DataSet getMenuByLevel(string strFT_ID)
{
DataSet ds = new DataSet();
using (SqlConnection con = new SqlConnection("Data Source=localhost;uid=sa;pwd=;Database=TW_KJ"))
{
con.Open();
string strSQL;
if (strFT_ID == "00")
{
strSQL = "select * from TB_Personnel_Type where FT_ID like'" + "0_' and FT_UP_NO = 1";
}
else
{
strSQL = "select * from TB_Personnel_Type where FT_ID like'" + strFT_ID.Trim() + "__'";
}
using (SqlDataAdapter adapter = new SqlDataAdapter(strSQL, con))
{
adapter.Fill(ds);
}
}
return ds;
}
//递归获取子节点
private void InitTreeCompanyChildNode(TreeNode pNode, string fatherFT_ID)
{
DataSet ds = getMenuByLevel(fatherFT_ID);
DataView dataView = new DataView();
dataView = ds.Tables[0].DefaultView;
foreach (DataRowView drv in dataView)
{
string newFT_ID = drv["FT_ID"].ToString();
string name = drv["FT_NAME"].ToString();
TreeNode NewNode = new TreeNode();
//将子节点添加到父节点下面
NewNode.Text = name;
pNode.Nodes.Add(NewNode);
InitTreeCompanyChildNode(NewNode, newFT_ID);
}
}
private void Property_Load(object sender, EventArgs e)
{
AddRootCompany();
}