C#实现XML与实体类之间相互转换的方法(序列化与反序列化)

本文实例讲述了C#实现XML与实体类之间相互转换的方法。分享给大家供大家参考，具体如下：

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;
}

PS：小编这里再来为大家推荐几款关于xml操作的在线工具供大家免费使用。相信在以后开发中可以用的到：

在线XML格式化/压缩工具：
http://tools.jb51.net/code/xmlformat

在线XML/JSON互相转换工具：
http://tools.jb51.net/code/xmljson

xml代码在线格式化美化工具：
http://tools.jb51.net/code/xmlcodeformat

HTML/XML转义字符对照表：
http://tools.jb51.net/table/html_escape

希望本文所述对大家C#程序设计有所帮助。