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("\r\n");
}
/* 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;
}