XML筛选

Question

- <root>
  <quantity>2</quantity> 
- <statelist>
  <state id="3" name="测试者7" id_no="3625241987125317" telphone="12121111111" areaname="厦门市" orgname="厦门市翔安区内厝卫生院" diagnosis="" catalogName="高血压" diagnosistime="2011/11/8 0:00:00" sex="1">3</state> 
  <state id="1" name="易诺欣" id_no="35020319570503110X" telphone="1595959295209" areaname="福州市" orgname="鼓楼区阔埕街卫生服务中心" diagnosis="" catalogName="高血压" diagnosistime="2011/11/7 0:00:00" sex="2">3</state> 
  </statelist>
  </root>
  string strParm ="1,3";
string strXml="上面的xml"怎么把1,3当成是state 的id 传入得到xml的格式为（比如传入的是3）- <statelist>
  <state id="3" name="测试者7" id_no="3625241987125317" telphone="12121111111" areaname="厦门市" orgname="厦门市翔安区内厝卫生院" diagnosis="" catalogName="高血压" diagnosistime="2011/11/8 0:00:00" sex="1">3</state> 
  </statelist>

Answer 1

使用xpath查找,下面代码手写的,不一定对XmlDocument xmlDoc=new XmlDocument()
xmlDoc.load("F:\\1.xml");
var node=xmlDoc.SelectSingleNode("//statelist/state[id=\"3\"]");
return node.OuterXml;
参考: http://www.w3school.com.cn/xpath/

Answer 2

不好意思 jquery写多了var node=xmlDoc.SelectSingleNode("//statelist/state[id=\"3\"]");改成var node=xmlDoc.SelectSingleNode("//statelist/state[@id=\"3\"]");

Answer 3

Linq 
//获取Xml文件
            XElement xl=XElement.Load(Server.MapPath(Constant.MenuFile));
            //获得指定的子节点
            IEnumerable<XElement> node = from a in xl.Elements()
                               where a.Attribute("id").Value == "7"
                               select a;
            //遍历循环指定的子节点
            foreach (XElement xx in node.Elements()) 
            {
                int lastId=Convert.ToInt32(xx.Elements().Last().Attribute("id").Value)+1;
                if (xx.Attribute("id").Value == "71") 
                {
    //创建节点
                    XElement xtt=new XElement ("menu",
                        new XAttribute("id",lastId),
                        new XAttribute("pid","71"),
                        new XAttribute("name",this.txtSceneryName.Text),
                        new XAttribute("subject","#"),
                        new XAttribute("url","../Scenery/SceneryPicture.aspx")
                        );
    //添加节点
                    xx.Add(xtt);
    //保存XML文件
                    xl.Save(Server.MapPath(Constant.MenuFile));
                }
            }
参考!

Answer 4

http://wenwen.soso.com/z/q69352732.htmhttp://book.51cto.com/art/201012/241211.htm