c# XML和实体类之间相互转换(序列化和反序列化)

    using System;  
    using System.Collections.Generic;  
    using System.Linq;  
    using System.Text;  
    using System.IO;  
    using System.Data;  
    using System.Xml;  
    using System.Xml.Serialization;  
       
    /// <summary>  
    /// Xml序列化与反序列化  
    /// </summary>  
    public class XmlUtil  
    {  
        #region 反序列化  
        /// <summary>  
        /// 反序列化  
        /// </summary>  
        /// <param name="type">类型</param>  
        /// <param name="xml">XML字符串</param>  
        /// <returns></returns>  
        public static object Deserialize(Type type,string xml)  
        {  
            try  
            {  
                using (StringReader sr = new StringReader(xml))  
                {  
                    XmlSerializer xmldes = new XmlSerializer(type);  
                    return xmldes.Deserialize(sr);  
                }  
            }  
            catch (Exception e)  
            {  
       
                return null;  
            }  
        }  
        /// <summary>  
        /// 反序列化  
        /// </summary>  
        /// <param name="type"></param>  
        /// <param name="xml"></param>  
        /// <returns></returns>  
        public static object Deserialize(Type type,Stream stream)  
        {  
            XmlSerializer xmldes = new XmlSerializer(type);  
            return xmldes.Deserialize(stream);  
        }  
        #endregion  
      
        #region 序列化  
        /// <summary>  
        /// 序列化  
        /// </summary>  
        /// <param name="type">类型</param>  
        /// <param name="obj">对象</param>  
        /// <returns></returns>  
        public static string Serializer(Type type,object obj)  
        {  
            MemoryStream Stream = new MemoryStream();  
            XmlSerializer xml = new XmlSerializer(type);  
            try  
            {  
                //序列化对象  
                xml.Serialize(Stream,obj);  
            }  
            catch (InvalidOperationException)  
            {  
                throw;  
            }  
            Stream.Position = 0;  
            StreamReader sr = new StreamReader(Stream);  
            string str = sr.ReadToEnd();  
               
            sr.Dispose();  
            Stream.Dispose();  
       
            return str;  
        }  
      
        #endregion  
    }  

    /* 实体对象转换到Xml */  
    public class Student  
    {  
        public string Name { set; get; }  
        public int Age { set; get; }  
    }   
    Student stu1 = new Student() { Name = "okbase",Age = 10 };  
    string xml = XmlUtil.Serializer(typeof(Student),stu1);  
    Console.Write(xml);  
      
      
    /* Xml转换到实体对象 */  
    Student stu2 = XmlUtil.Deserialize(typeof(Student),xml) as Student;  
    Console.Write(string.Format("名字:{0},年龄:{1}",stu2.Name,stu2.Age));  
      
      
    /* DataTable转换到Xml */  
    // 生成DataTable对象用于测试  
    DataTable dt1 = new DataTable("mytable");   // 必须指明DataTable名称   
    dt1.Columns.Add("Dosage",typeof(int));  
    dt1.Columns.Add("Drug",typeof(string));  
    dt1.Columns.Add("Patient",typeof(string));  
    dt1.Columns.Add("Date",typeof(DateTime));   
    // 添加行  
    dt1.Rows.Add(25,"Indocin","David",DateTime.Now);  
    dt1.Rows.Add(50,"Enebrel","Sam",DateTime.Now);  
    dt1.Rows.Add(10,"Hydralazine","Christoff",DateTime.Now);  
    dt1.Rows.Add(21,"Combivent","Janet",DateTime.Now);  
    dt1.Rows.Add(100,"Dilantin","Melanie",DateTime.Now);   
    // 序列化  
    xml = XmlUtil.Serializer(typeof(DataTable),dt1);  
    Console.Write(xml);  
      
      
    /* Xml转换到DataTable */  
    // 反序列化  
    DataTable dt2 = XmlUtil.Deserialize(typeof(DataTable),xml) as DataTable;   
    // 输出测试结果  
    foreach (DataRow dr in dt2.Rows)  
    {  
        foreach (DataColumn col in dt2.Columns)  
        {  
            Console.Write(dr[col].ToString() + " ");  
        }   
        Console.Write("rn");  
    }  
      
    /* List转换到Xml */  
    // 生成List对象用于测试  
    List<Student> list1 = new List<Student>(3);   
    list1.Add(new Student() { Name = "okbase",Age = 10 });  
    list1.Add(new Student() { Name = "csdn",Age = 15 });  
    // 序列化  
    xml = XmlUtil.Serializer(typeof(List<Student>),list1);  
    Console.Write(xml);  
      
    /* Xml转换到List */  
    List<Student> list2 = XmlUtil.Deserialize(typeof(List<Student>),xml) as List<Student>;  
    foreach (Student stu in list2)  
    {  
        Console.WriteLine(stu.Name + "," + stu.Age.ToString());  
    }  

    protected void Page_Load(object sender,EventArgs e)  
    {  
        string strTest = @"<Relationships>  
          <VariationParent xmlns='http://www.microsoft.com/schema/Products/2011-10-01'>  
            <Identifiers>  
              <MarketplaceASIN>  
                <MarketplaceId>ATVPDKIKX0DER</MarketplaceId>  
                <ASIN>B00K69WURQ</ASIN>  
              </MarketplaceASIN>  
              <MarketplaceASIN>  
                <MarketplaceId>TBVPDKIKX0DER</MarketplaceId>  
                <ASIN>C00K69WURQ</ASIN>  
              </MarketplaceASIN>  
              <MarketplaceASIN>  
                <MarketplaceId>KlVPDKIKX0DER</MarketplaceId>  
                <ASIN>D00K69WURQ</ASIN>  
              </MarketplaceASIN>  
            </Identifiers>  
          </VariationParent>  
        </Relationships>";  
        TextBox1.Text = "";  
      
        XmlDocument doc = new XmlDocument();  
        doc.LoadXml(strTest);  
        XmlElement root = doc.DocumentElement;  
        //用于带命名空间的XML操作  
        XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);  
        nsmgr.AddNamespace("ab","http://www.microsoft.com/schema/Products/2011-10-01");  
        XmlNodeList macthNodes = root.SelectNodes("//ab:Identifiers/ab:MarketplaceASIN",nsmgr);  
      
        for (int i = 0; i < macthNodes.Count; i++)  
        {  
            //删除生成的命名空间，生成标准XML。  
            string matchNode = CleanXmlnsTag(macthNodes[i].OuterXml);  
            MarketplaceASIN ma = XmlUtil.Deserialize(typeof(MarketplaceASIN),matchNode) as MarketplaceASIN;  
            if (ma != null)  
            {  
                Response.Write(ma.MarketplaceId + "---------" + ma.ASIN + "<br/>");  
            }  
        }  
    }  
      
    /* 实体对象 */  
    public class MarketplaceASIN  
    {  
        public string MarketplaceId { set; get; }  
        public string ASIN { set; get; }  
    }  
      
    protected string CleanXmlnsTag(string xml)  
    {  
        xml = xml.Replace("xmlns="http://www.microsoft.com/schema/Products/2011-10-01"","");  
        return xml;  
    }