Xml 序列化和反序列化

using System.IO;
using System.Xml;
using System.Xml.Serialization;

 1 public class XmlHelper
 2         {
 3             public static T Deserialize<T>(String file)
 4             {
 5                 if (!File.Exists(file))
 6                 {
 7                     throw new FileNotFoundException();
 8                 }
 9 
10                 T obj;
11                 using (FileStream fs = new FileStream(file,FileMode.Open))
12                 {
13                     XmlSerializer xml = new XmlSerializer(typeof(T));
14                     obj = (T)xml.Deserialize(fs);
15                     fs.Close();
16                 }
17                 return obj;
18             }
19            
20 
21             #region 序列化
22             /// <summary>
23             /// 序列化
24             /// </summary>
25             /// <param name="type">类型</param>
26             /// <param name="obj">对象</param>
27             /// <returns></returns>
28             public static string Serializer<T>(object obj)
29             {
30                 using (MemoryStream stream = new MemoryStream())
31                 {
32                     XmlSerializer xml = new XmlSerializer(typeof(T));
33                     //序列化对象
34                     xml.Serialize(stream,obj);
35                     stream.Position = 0;
36                     using (StreamReader sr = new StreamReader(stream))
37                     {
38                         string str = sr.ReadToEnd();
39                         return str;
40                     }
41                 }
42             }
43             public static void Serializer<T>(String saveFile,T obj)
44             {
45                 XmlSerializer serializer = new XmlSerializer(typeof(T));
46                 using (FileStream stream = new FileStream(saveFile,FileMode.Create))
47                 {
48                     serializer.Serialize(stream,obj);
49                 }
50             }
51             /// <summary>
52             /// 将一个对象序列化为XML字符串
53             /// </summary>
54             /// <param name="obj">要序列化的对象</param>
55             /// <param name="encoding">编码方式</param>
56             /// <returns>序列化产生的XML字符串</returns>
57             public static void XmlSerialize(object obj,string xml,Encoding encoding)
58             {
59                 if (encoding == null)
60                     throw new ArgumentNullException("encoding");
61 
62                 using (FileStream stream = new FileStream(xml,FileMode.Create))
63                 {
64                     XmlWriterSettings settings = new XmlWriterSettings();
65                     settings.Encoding = encoding;
66                     settings.Indent = true;//缩进和换行
67                     using (XmlWriter writer = XmlWriter.Create(stream,settings))
68                     {
69                         XmlSerializer serializer = new XmlSerializer(obj.GetType());
70                         serializer.Serialize(writer,obj);
71                     }
72                 }
73             }
74 
75             #endregion
76         }