用C#实现XML和实体类之间序列化和反序列化相互转换

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 = ;
        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 =  };
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(, "Indocin", "David", DateTime.Now);
dt1.Rows.Add(, "Enebrel", "Sam", DateTime.Now);
dt1.Rows.Add(, "Hydralazine", "Christoff", DateTime.Now);
dt1.Rows.Add(, "Combivent", "Janet", DateTime.Now);
dt1.Rows.Add(, "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("\r\n");
} 

/* List转换到Xml */
// 生成List对象用于测试
List<Student> list1 = new List<Student>();
list1.Add(new Student() { Name = "okbase", Age =  });
list1.Add(new Student() { Name = "csdn", Age =  });
// 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 = ; 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;
}