C＃ Winform开发 数据的序列化与反序列化

C#的序列化一共有三种方案，二进制格式（使用BinaryFormatter序列化器）、SOAP格式（使用SoapFormatter序列化器）、XML格式（使用XmlSerializer序列化器）。这里只涉及XML序列化：

因为这里C#中的后台数据都来自于XML文件，因此需要对XML文件进行读写，写入XML文件需要提供需要序列化的参数和路径，而反序列化仅需要提供路径即可。这里注意序列化时不要出现循环引用的情况，不然会序列化失败。

头文件：using System.Xml.Serialization;

序列化代码：

public static void WriteExerciseToXml(AbstractExercise exercise, string fileName)
        {
            if (exercise == null
                || fileName == null)
            {
                throw new System.ArgumentNullException();
            }

            // open the XML file in FileStream
            // overwrite the file if it exists, otherwise create a new one
            FileStream xmlFile = new FileStream(fileName, FileMode.Create);

            // create a text XML writer
            // associated it with the opened XML file stream above
            XmlDictionaryWriter xmlWriter = XmlDictionaryWriter.CreateTextWriter(xmlFile);

            // create a serializer for the AbstractExercise type
            DataContractSerializer serializer =
                new DataContractSerializer(typeof(AbstractExercise));

            // serialize the exercise object
            serializer.WriteObject(xmlWriter, exercise);

            // close streams
            xmlWriter.Close();
            xmlFile.Close();
        }

反序列化代码：

// deserialize an object from the given XML file
        public static AbstractExercise ReadExerciseFromXml(string fileName)
        {
            if (fileName == null)
            {
                throw new System.ArgumentNullException();
            }

            // open XML file in FileStream
            FileStream xmlFile = new FileStream(fileName, FileMode.Open);

            // crete a text XML reader
            // associated it with the opened XML file above
            XmlDictionaryReader reader =
                XmlDictionaryReader.CreateTextReader(xmlFile, new XmlDictionaryReaderQuotas());

            // create a serializer for the AbstratExercise type
            DataContractSerializer serizalizer = new DataContractSerializer(typeof(AbstractExercise));

            // Deserialize the object
            AbstractExercise exercise = (AbstractExercise)serizalizer.ReadObject(reader, true);

            // close streams
            reader.Close();
            xmlFile.Close();

            return exercise;
        }