对本地及网络上xml文件的读取

1.读取本地xml文件用FileStream

2.读取网络xml文件需要用HttpWebRequest和HttpWebResponse及Stream

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.IO;
using System.Xml.Serialization;
using System.Net;

namespace LoadXmlFromWeb
{
    public class XmlFile
    {
        /// <summary>
        /// 读取XML文件
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public static object ReadXMLFile(object type)
        {
            //return ReadXMLFile(type, "c:\\dll\\regexp.xml");
            return ReadXMLFileFromWeb(type, "http://www.baidu.com/regexp.xml");
        }
        /// <summary>
        /// 读取本地XML文件
        /// </summary>
        /// <param name="type"></param>
        /// <param name="XMLDocumentUrl">本地路径</param>
        /// <returns></returns>
        public static object ReadXMLFile(object type, string XMLDocumentUrl)
        {
            //object XmlObject;
            try
            {
                //new filestream to open serialized object
                using (FileStream fileStream = new FileStream(XMLDocumentUrl, FileMode.Open))
                {
                    //new serializer
                    XmlSerializer xmlSerializer = new XmlSerializer(type.GetType());
                    //deserialize the object
                    type = xmlSerializer.Deserialize(fileStream);
                    //load it in the list box.
                    //fileStream.Close();
                }
                return type;

            }
            catch(Exception ex)
            {
                return null;
            }
        }

        /// <summary>
        /// 读取网络上的xml文件
        /// </summary>
        /// <param name="type"></param>
        /// <param name="XMLDocumentUrl">网址</param>
        /// <returns></returns>
        public static object ReadXMLFileFromWeb(object type, string XMLDocumentUrl)
        {
            //object XmlObject;
            try
            {
        //需要引进名称空间System.Net;
                HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(XMLDocumentUrl);
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();

                //new filestream to open serialized object
                using (Stream fileStream = response.GetResponseStream())
                {
                    //new serializer
                    XmlSerializer xmlSerializer = new XmlSerializer(type.GetType());
                    //deserialize the object
                    type = xmlSerializer.Deserialize(fileStream);
                    //load it in the list box.
                    //fileStream.Close();
                }
                return type;

            }
            catch (Exception ex)
            {
                return null;
            }
        }
    }
}