<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<cars>
<car ID="100000684" CarID="冀F33835" PhoneNumber="13933051471" Latitude="38.85945" Longitude="115.472746666667" Address="" Speed="0" Direction="25" LockState="GPS已定位 " EquipmentState="定时回传压缩数据" CarState="" AlarmState="0" GPSDatetime="2007-6-8 10:24:16" AddDate="2007-6-8 10:24:28" />
<car ID="100000685" CarID="冀F33875" PhoneNumber="15931051509" Latitude="38.85978" Longitude="115.472748333333" Address="" Speed="0" Direction="0" LockState="GPS已定位 " EquipmentState="定时回传压缩数据" CarState="" AlarmState="0" GPSDatetime="2007-6-28 12:24:03" AddDate="2007-6-28 12:24:29" />
</cars>

如何读取上面xml文件的CarID="冀F33875"的记录其他值啊，比如CarState？

比较笨的方法：先将它读到DataSet中，再在DataSet搜索就可以了
DataSet dsCar=new DataSet();
dsCar.ReadXml("文件名");
for(int i=0;i<dsCar.Table[0].Rows.Count;i++)
{
if(dsCar.Table[0].Rows[i]["CarID"].ToString()==="冀F33835")
{
MessageBox.Show(dsCar.Table[0].Rows[i]["CarState"].ToString());
}
}

好像是可以的,不知道LZ弄的怎么样了???
也不回个话

private string readAttribute(string xmlPath)//xmlPath是你的xml文档的路径
        {
            string xmlGet = "";
            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(xmlPath);
            XmlNodeList xnl = xmlDoc.SelectSingleNode("cars").ChildNodes;
            foreach (XmlNode xn in xnl)
            {
                XmlElement xmlE = (XmlElement)xn;
                if (xmlE.GetAttribute("CarID") == "冀F33835")
                {
                    xmlGet = xmlE.GetAttribute("CarState");
                    break;
                }
            }
            return xmlGet;
        }