c# XML序列化与反序列化

原先一直用BinaryFormatter来序列化挺好，可是最近发现在WinCE下是没有办法进行BinaryFormatter操作，很不爽，只能改成了BinaryWriter和BinaryReader来读写，突然想到能不能用XML来序列化？于是在网上查了些资料便写了些实践性代码，做些记录，避免以后忘记。

序列化对象

public class People

{

[XmlAttribute("NAME")]

public string Name

{ set; get; }

[XmlAttribute("AGE")]

public int Age

{ set; get; }

}

[XmlRoot("Root")]

public class Student : People

{

[XmlElement("CLASS")]

public string Class

{ set; get; }

[XmlElement("NUMBER")]

public int Number

{ set; get; }

}

void Main(string[] args)

{

Student stu = new Student()

{

Age = 10,

Class = "Class One",

Name = "Tom",

Number = 1

};

XmlSerializer ser = new XmlSerializer(typeof(Student));

ser.Serialize(File.Create("C:\\x.xml"), stu);

}

反序列化对象

XmlSerializer ser = new XmlSerializer(typeof(Student));

Student stu = ser.Deserialize(File.OpenRead("C:\\x.xml")) as Student;

对象数组序列化

public class People

{

[XmlAttribute("NAME")]

public string Name

{ set; get; }

[XmlAttribute("AGE")]

public int Age

{ set; get; }

}

[XmlRoot("Root")]

public class Student : People

{

[XmlElement("CLASS")]

public string Class

{ set; get; }

[XmlElement("NUMBER")]

public int Number

{ set; get; }

}

void Main(string[] args)

{

List<Student> stuList = new List<Student>();

stuList.Add(new Student() { Age = 10, Number = 1, Name = "Tom", Class = "Class One" });

stuList.Add(new Student() { Age = 11, Number = 2, Name = "Jay", Class = "Class Two" });

stuList.Add(new Student() { Age = 12, Number = 3, Name = "Pet", Class = "Class One" });

stuList.Add(new Student() { Age = 13, Number = 4, Name = "May", Class = "Class Three" });

stuList.Add(new Student() { Age = 14, Number = 5, Name = "Soy", Class = "Class Two" });

XmlSerializer ser = new XmlSerializer(typeof(List<Student>));

ser.Serialize(File.Create("C:\\x.xml"), stuList);

}

对象数组反序列

XmlSerializer ser = new XmlSerializer(typeof(List<Student>));

List<Student> stuList = ser.Deserialize(File.OpenRead("C:\\x.xml")) as List<Student>;

foreach (Student s in stuList)

{

MessageBox.Show(string.Format("{0} : {1} : {2} : {3}",

s.Name, s.Age, s.Class, s.Number));

}

序列化Dirctionary

public struct DirectionList

{

[XmlAttribute("Name")]

public string Name;

[XmlElement("Value")]

public int Value;

}

void Main(string[] args)

{

Dictionary<string, int> list = new Dictionary<string, int>();

list.Add("1", 100);

list.Add("2", 200);

list.Add("3", 300);

list.Add("4", 400);

list.Add("5", 500);

list.Add("6", 600);

list.Add("7", 700);

list.Add("8", 800);

list.Add("9", 900);

List<DirectionList> dirList = new List<DirectionList>();

foreach (var s in list)

{

dirList.Add(new DirectionList() { Name = s.Key, Value = s.Value });

}

XmlSerializer ser = new XmlSerializer(typeof(List<DirectionList>));

ser.Serialize(File.Create("C:\\x.xml"), dirList);

}

这里还要讲一点，在XmlSerializer中，不支持Dirctionary<>类型的对象，所以在序列化这种最常见类型的时候，只能按照它的格式先创建一个可以别序列化的类型，这里我定义了一个结构体，当然你也可以定义成其他的类。将Dictionary<>中的数据依次放进结构体以后就可以放入流中了。

[XmlAttribute("Name")]意思是将这个字段作为xml的属性，属性名跟在“”中

[XmlElement("Value")]意思是将这个字段做为xml的元素。

反序列化Dirctionary

XmlSerializer ser = new XmlSerializer(typeof(List<DirectionList>));

List<DirectionList> dirList = ser.Deserialize(

File.OpenRead("C:\\x.xml")) as List<DirectionList>;

foreach (var v in dirList)

{

Console.WriteLine("{0} : {1}", v.Name, v.Value);

}

其实我并不喜欢这个名称，感觉有点生化危机的feel，但是也就是这样了，没有太炫的地方，Deserialize反序列化。真希望.Net能集成Dirctionary<>对象，那我们这些懒人就方便了。

在需要序列化的队伍中，数组是很常见的类型，其次就是图片了

序列化图片

public struct ImageStruct

{

[XmlAttribute("Number")]

public int number;

[XmlElement("Image")]

public byte[] picture;

}

void Main(string[] args)

{

ImageStruct s = new ImageStruct() { number = 1, picture = File.ReadAllBytes(@"11.jpg") };

XmlSerializer ser = new XmlSerializer(typeof(ImageStruct));

FileStream fs = File.Create("c:\\x.xml");

ser.Serialize(fs, s);

fs.Close();

}

一样的，采用结构体来保存图片，这里我还加了个图片的名字，到时候查找起来也方便一些

图片反序列化

XmlSerializer ser = new XmlSerializer(typeof(ImageStruct));

ImageStruct s = (ImageStruct)ser.Deserialize(File.OpenRead("c:\\x.xml"));

pictureBox1.Image = Image.FromStream(new MemoryStream(s.picture));

没有花头的方式，利用memorystream来做缓存，这样会比较快一点，实际上我并没有怎么感觉。

图片数组序列化

public struct ImageStruct

{

[XmlAttribute("Number")]

public int number;

[XmlElement("Image")]

public byte[] picture;

}

void Main(string[] args)

{

List<ImageStruct> imageList = new List<ImageStruct>();

imageList.Add(new ImageStruct()

{

number = 1,

picture = File.ReadAllBytes(@"11.jpg")

});

imageList.Add(new ImageStruct()

{

number = 2,

picture = File.ReadAllBytes(@"22.jpg")

});

XmlSerializer ser = new XmlSerializer(typeof(List<ImageStruct>));

FileStream fs = File.Create("c:\\x.xml");

ser.Serialize(fs, imageList);

fs.Close();

}

图片数组反序列化

XmlSerializer ser = new XmlSerializer(typeof(List<ImageStruct>));

List<ImageStruct> s = (List<ImageStruct>)ser.Deserialize(File.OpenRead("c:\\x.xml"));

var im = from i in s

where i.number == 1

select i.picture;

//var im = s.Where(p => p.number == 1).Select(p => p.picture);

foreach (var image in im)

{

pictureBox1.Image = Image.FromStream(

new MemoryStream(image));

}

这里还对数组结构进行了Linq查询，这样就可以很方便的查询图片了。