Cate.xml文件内容
<?xml version="1.0" encoding="utf-8" ?><Root> <Content> <ID>1</ID> <ParentID>0</ParentID> <CateName>类别1</CateName> </Content> <Content> <ID>2</ID> <ParentID>1</ParentID> <CateName>类别2</CateName> </Content> <Content> <ID>3</ID> <ParentID>2</ParentID> <CateName>类别3</CateName> </Content> <Content> <ID>4</ID> <ParentID>3</ParentID> <CateName>类别4</CateName> </Content> <Content> <ID>5</ID> <ParentID>0</ParentID> <CateName>类别5</CateName> </Content> <Content> <ID>6</ID> <ParentID>0</ParentID> <CateName>类别6</CateName> </Content> <Content> <ID>7</ID> <ParentID>6</ParentID> <CateName>类别7</CateName> </Content> <Content> <ID>8</ID> <ParentID>7</ParentID> <CateName>类别8</CateName> </Content> <Content> <ID>9</ID> <ParentID>0</ParentID> <CateName>类别9</CateName> </Content> <Content> <ID>10</ID> <ParentID>0</ParentID> <CateName>类别10</CateName> </Content></Root>面页Default.aspx内容
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>无标题页</title></head><body> <form id="form1" runat="server"> <div> <asp:DropDownList ID="ddlCate" runat="server"> </asp:DropDownList></div> </form></body></html>Default.aspx.cs内容
using System;using System.Data;using System.Configuration;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;public partial class _Default : System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack) { BindData(0, "",0);
} } private void BindData(int pId,string textStr,int m) { DataTable dt= CateDAL.GetData(pId,Server.MapPath("Cate.xml")); if (dt != null) { for (int i = 0; i < dt.Rows.Count; i++) { textStr = ""; if (pId != 0) { m = m + 1; for (int j = 0; j < m; j++) { textStr += " "; } } else { m = 0; } int parantID = Convert.ToInt32(dt.Rows[i]["ID"].ToString()); ddlCate.Items.Add(new ListItem(textStr + "├" + dt.Rows[i]["CateName"].ToString(), parantID.ToString())); BindData(parantID, textStr, m); } } }
}App_Code/CateDAL.cs文件
using System;using System.Data;using System.Configuration;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;/// <summary>/// Class1 的摘要说明/// </summary>public class CateDAL{ private CateDAL() { // // TODO: 在此处添加构造函数逻辑 // } public static DataTable GetData(int parantID,string Path) { XmlUtility xmlData = new XmlUtility(Path); DataSet ds = xmlData.GetData("Root/Content[ParentID=\"" + parantID + "\"]"); if (ds.Tables.Count != 0) { return ds.Tables[0]; } else { return null; } }}