Linq To Xml操作类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Reflection;
using System.Xml;
using System.Xml.Linq;
using System.Windows.Forms;
using System.Net;

/*Xml操作类：Ruiky 2011-12-28*/
namespace FinanceGrab.Common.Util
{
    public class XmlUtil
    {
        private static object Syncr = new object();
        

/// <summary>
        /// 写入Xml数据
        /// </summary>
        /// <param name="xmlName">Xml名称</param>
        /// <param name="grabName">抓取产品名称</param>
        /// <param name="standardName">库中名称</param>
        /// <param name="proCode">产品代码</param>
        /// <param name="remark">备注</param>
        /// <returns>True:成功，False:失败</returns>
        public static bool InsertXml(string xmlName, string websiteID, string grabName, string standardName, string proCode, string remark)
        {
            lock (Syncr)
            {
                try
                {
                    XDocument doc = new XDocument();
                    string xmlFilePath = Directory.GetParent(Assembly.GetExecutingAssembly().Location) + @"\" + xmlName;

                    if (!File.Exists(xmlFilePath))
                    {
                        doc.Add(new XElement("Websites", ""));
                        doc.Save(xmlFilePath);
                    }

                    doc = XDocument.Load(xmlFilePath);
                    bool b = UpdateXml(xmlFilePath,websiteID, grabName, standardName, proCode, remark);
                    if (!b)
                    {
                        XElement xe = new XElement("Website", new XAttribute("siteId", websiteID),
                                        new XElement("Product",
                                            new XAttribute("GrabName", grabName),
                                            new XAttribute("Code", proCode),
                                            new XAttribute("StandardName", standardName),
                                            new XAttribute("Remark", remark),
                                            new XAttribute("AddTime", DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss")),
                                            new XAttribute("HostName", Dns.GetHostName())
                                         ));

                        doc.Element("Websites").Add(xe);
                        doc.Save(xmlFilePath);
                        return true;
                    }

                    return b;

                }
                catch (System.Exception ex)
                {
                    MessageBox.Show(ex.Message);
                    return false;
                }
            }
        }

        /// <summary>
        /// 更新Xml数据
        /// </summary>
        /// <param name="xmlFilePath">Xml路径名称</param>
        /// <param name="grabName">抓取产品名称</param>
        /// <param name="standardName">库中名称</param>
        /// <param name="proCode">产品代码</param>
        /// <param name="remark">备注</param>
        /// <returns>True:成功，False:失败</returns>
        public static bool UpdateXml(string xmlFilePath, string websiteID, string grabName, string standardName, string proCode, string remark)
        {
            lock (Syncr)
            {
                try
                {
                    XDocument doc = XDocument.Load(xmlFilePath);

                    if (doc != null)
                    {
                        var vIsCreatWebsite = (from g in doc.Elements().Descendants("Website")/*是否创建网站记录:网站唯一性*/
                                               where g.Attribute("siteId").Value.Equals(websiteID)
                                               select g).FirstOrDefault();



                        if (vIsCreatWebsite != null)
                        {
                            var vIsCreatProduct = (from g in vIsCreatWebsite.Descendants("Product")/*是否创建产品记录:产品唯一性*/
                                                   where g.Attribute("GrabName").Value.Equals(grabName)
                                                   select g).FirstOrDefault();

                            if (vIsCreatProduct == null)
                            {
                                XElement xe = new XElement("Product");
                                xe.SetAttributeValue("GrabName", grabName);
                                xe.SetAttributeValue("Code", proCode);
                                xe.SetAttributeValue("StandardName", standardName);
                                xe.SetAttributeValue("Remark", remark);
                                xe.SetAttributeValue("AddTime", DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss"));
                                xe.SetAttributeValue("HostName", Dns.GetHostName());

                                vIsCreatWebsite.Add(xe);
                                doc.Save(xmlFilePath);

                                return true;
                            }
                            else
                            {
                                vIsCreatProduct.SetAttributeValue("Code", proCode);
                                vIsCreatProduct.SetAttributeValue("Remark", remark);

                                doc.Save(xmlFilePath);
                                return true;
                            }
                        }
                    }

                    return false;

                }
                catch (System.Exception ex)
                {
                    MessageBox.Show(ex.Message);
                    return false;
                }
            }
        }

    }
}