C# XML和实体类之间相互转换(序列化和反序列化)

我们需要在XML与实体类，DataTable，List之间进行转换，下面是XmlUtil类，该类来自网络并稍加修改。

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
}

下面是测试代码：

1. 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);

2. 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));

3. 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);

4. 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");
}

5. 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 = "****", Age = 15 });
// 序列化
xml = XmlUtil.Serializer(typeof(List<Student>), list1);
Console.Write(xml);

6. 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());
}

从代码可以看到，千变万化不离其宗!