c# XML序列化与反序列化

来源：互联网发布：巴宝莉香水男士知乎编辑：程序博客网时间：2024/04/30 06:27

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

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。

0 0