一个很简单的jquery+xml+ajax的无刷新树结构(无css，后台是c#)

复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.Linq;
using System.Xml;
using System.Xml.Linq;
namespace WebApplication3 {
public partial class WebForm1: System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) {
int id = Convert.ToInt32(Request["parentID"]);
GetXML(id);
}
public IList < Product > GetList() {
return new List < Product > () {
new Product() {
Id = 1,
ParentId = 0,
HasChild = 1,
Name = "aaaaa"
},
new Product() {
Id = 2,
ParentId = 1,
HasChild = 1,
Name = "bbbb1"
},
new Product() {
Id = 3,
ParentId = 2,
HasChild = 0,
Name = "ccccc2"
},
new Product() {
Id = 4,
ParentId = 2,
HasChild = 0,
Name = "ddddd3"
},
new Product() {
Id = 5,
ParentId = 1,
HasChild = 0,
Name = "eeeeee4"
},
new Product() {
Id = 6,
ParentId = 3,
HasChild = 0,
Name = "ffffff5"
},
new Product() {
Id = 7,
ParentId = 4,
HasChild = 0,
Name = "ggggggg6"
},
new Product() {
Id = 8,
ParentId = 7,
HasChild = 0,
Name = "hhhhhhh7"
},
new Product() {
Id = 9,
ParentId = 0,
HasChild = 0,
Name = "jjjjjjj8"
},
new Product() {
Id = 10,
ParentId = 0,
HasChild = 0,
Name = "yyyyyyyy9"
}
};
} ///

/// 通过父节点读取子节点并且拼接成xml给前台
///

///
public void GetXML(int parentId) {
List list = GetList().Where(x => x.ParentId == parentId).ToList();
XElement xElement = new XElement("textTree");
foreach (Product p in list) {
xElement.Add(new XElement("value", new XAttribute("id", p.Id),p.Name));
}
xElement.Save("d:\kissnana.xml");
Xmldocument xdocument = new Xmldocument();
xdocument.Load("d:\kissnana.xml");
Response.ContentType = "text/xml";
xdocument.Save(Response.OutputStream);
Response.End();
}
}
public class Product {
public int Id{set;get;}
public int ParentId{set;get;}
public int HasChild{set;get;}
public string Name{set;get;}
}}
思路很简单，后台利用xml送往前台通过jquery接收处理拼接ul,
li原理（利用 < li > 中嵌套 < ul > 的方式，局部读取一节点下的所有直属子节点，每次点击读取，读取过的话，则进入GetDisplayOrNot（）方法判断显示和隐藏节点）html代码： < body >

runat = "server" > value = "text"
onclick = "LoadXml(0)" / >

前台代码：
复制代码 代码如下:


后台：
复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.Linq;
using System.Xml;
using System.Xml.Linq;
namespace WebApplication3
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
int id =Convert.ToInt32(Request["parentID"]);
GetXML(id);
}
public IList GetList()
{
return new List()
{
new Product(){ Id=1, ParentId=0, HasChild=1, Name="aaaaa" },
new Product(){ Id=2, ParentId=1, HasChild=1, Name="bbbb1" },
new Product(){ Id=3, ParentId=2, HasChild=0, Name="ccccc2" },
new Product(){ Id=4, ParentId=2, HasChild=0, Name="ddddd3" },
new Product(){ Id=5, ParentId=1, HasChild=0, Name="eeeeee4" },
new Product(){ Id=6, ParentId=3, HasChild=0, Name="ffffff5" },
new Product(){ Id=7, ParentId=4, HasChild=0, Name="ggggggg6" },
new Product(){ Id=8, ParentId=7, HasChild=0, Name="hhhhhhh7" },
new Product(){ Id=9, ParentId=0, HasChild=0, Name="jjjjjjj8" },
new Product(){ Id=10,ParentId=0, HasChild=0, Name="yyyyyyyy9" }
};
}

///

/// 通过父节点读取子节点并且拼接成xml给前台
///

///
public void GetXML(int parentId)
{
List list = GetList().Where(x => x.ParentId == parentId).ToList();
XElement xElement = new XElement("textTree");
foreach (Product p in list)
{
xElement.Add(new XElement("value", new XAttribute("id", p.Id),p.Name));
}
xElement.Save("d:\kissnana.xml");
Xmldocument xdocument = new Xmldocument();
xdocument.Load("d:\kissnana.xml");
Response.ContentType = "text/xml";
xdocument.Save(Response.OutputStream);
Response.End();
}
}
public class Product
{
public int Id{set;get;}
public int ParentId{set;get;}
public int HasChild{set;get;}
public string Name{set;get;}
}
}