C#的XML序列化和反序列化4

阅读更多

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

}

对象数组反序列

            XmlSerializer ser = new XmlSerializer(typeof(List));
            List stuList = ser.Deserialize(File.OpenRead("C:\\x.xml")) as List;
            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 list = new Dictionary();
            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 dirList = new List();
            foreach (var s in list)
            {
                dirList.Add(new DirectionList() { Name = s.Key, Value = s.Value });
            }
            XmlSerializer ser = new XmlSerializer(typeof(List));
            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));
            List dirList = ser.Deserialize(
                File.OpenRead("C:\\x.xml")) as List;
            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 imageList = new List();
            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));
            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));
            List s = (List)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。

你可能感兴趣的:(XML,C,C++,C#,Linq)