ASP.NET2.0 TreeView

Author:小山

from :http://www.cnblogs.com/singlepine/archive/2006/04/05/367801.html

待续
1.html代码

< html  xmlns ="http://www.w3.org/1999/xhtml"   >
< head  runat ="server" >
     < title > Untitled Page </ title >
     < script  language ="javascript" >
        function chkAll()
        {
            //debugger;
            var chkall= document.all["chkall"];
            var chkother= document.getElementsByTagName("input");
            for (var i=0;i<chkother.length;i++)
            {
                if( chkother[i].type=='checkbox')
                {
                    if(chkother[i].id.indexOf('TreeView1')>-1)
                    {
                        if(chkall.checked==true)
                        {
                            chkother[i].checked=true;
                        }
                        else
                        {
                            chkother[i].checked=false;
                        }
                    }
                }
            }
        }
     </ script >
</ head >
< body >
     < form  id ="form1"  runat ="server" >
          < table  width =100%  height =100% >
             < tr  height =10 >
                 < td >< input  id ="chkall"  type ="checkbox"  onclick ="chkAll();"   /> 全选/取消 </ td >
                 < td >< asp:Button  ID ="Button1"  runat ="server"  Text ="Button"   /></ td >
             </ tr >
             < tr  valign =top >
                 < td >< asp:TreeView  ID ="TreeView1"  runat ="server"   ></ asp:TreeView ></ td >
                 < td >< iframe  id =fMain  style ="BORDER-TOP-STYLE: none; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BORDER-BOTTOM-STYLE: none"
                            src =""  frameBorder ="0"  width ="100%"  scrolling ="yes"  height ="100%" ></ iframe ></ td >
             </ tr >
             < tr  height =10 >
                 < td ></ td >
             </ tr >
         </ table >

     </ form >
</ body >
</ html >

2.cs代码

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  Page_Wonderful_TreeView_System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            //BindTree();
            InitTree();
        }
    }

    主从表绑定#region 主从表绑定
    private void BindTree()
    {
        DataSet dst = GetTreeViewData();
        TreeView1.ShowCheckBoxes = TreeNodeTypes.All;
        foreach (DataRow masterRow in dst.Tables["province"].Rows)
        {
            TreeNode masterNode = new TreeNode((string)masterRow["province"]);
            TreeView1.Nodes.Add(masterNode);
            foreach (DataRow childRow in masterRow.GetChildRows("Children"))
            {
                TreeNode childNode =new TreeNode((string)childRow["city"]);
                masterNode.Expanded = false;
                masterNode.ChildNodes.Add(childNode);
            }
        }
    }

    private DataSet GetTreeViewData()
    {
        string constring = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];
        SqlConnection con = new SqlConnection(constring);
        SqlDataAdapter daprovince = new SqlDataAdapter("SELECT * FROM province", con);
        SqlDataAdapter dacity = new SqlDataAdapter("SELECT * FROM city", con);
        DataSet ds = new DataSet();
        daprovince.Fill(ds, "province");
        dacity.Fill(ds, "city");
        ds.Relations.Add("Children", ds.Tables["province"].Columns["provinceid"], ds.Tables["city"].Columns["father"]);
        return ds;
    }
    #endregion

    递归绑定同一个表数据#region 递归绑定同一个表数据
    private void InitTree()
    {
        DataTable dt = GetTreeViewTable();
        DataView dv = new DataView(dt);
        dv.RowFilter = "ParentID=0";
        TreeView1.ShowCheckBoxes = TreeNodeTypes.All;
        foreach (DataRowView drv in dv)
        {
            TreeNode node = new TreeNode();
            node.Text = drv["text"].ToString();
            node.Value = drv["ID"].ToString();
            node.Expanded = false;
            TreeView1.Nodes.Add(node);
            AddReplies(dt,node);
        }
    }

    private DataTable GetTreeViewTable()
    {
        string constring = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];
        SqlConnection con = new SqlConnection(constring);
        SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM treeview", con);
        DataTable dt = new DataTable();
        da.Fill(dt);
        return dt;
    }

    private void AddReplies(DataTable dt, TreeNode node)
    {
        DataView dv = new DataView(dt);
        dv.RowFilter = "ParentID='" + node.Value + "'";
        foreach (DataRowView row in dv)
        {
            TreeNode replyNode = new TreeNode();
            replyNode.Text = row["text"].ToString();
            replyNode.Value = row["ID"].ToString();
            replyNode.Expanded = false;
            node.ChildNodes.Add(replyNode);
            AddReplies(dt,replyNode);
        }
    }
    #endregion
}

3.测试数据库下载 area1.rar ， treeview.rar