前段时间写了一个关于XML序列化和反序列化的（），最近突然发现一个问题，就是当XML节点值为空时，序列化后的XML节点会是这种形式的<node />。但是我们如果需要<node></node>这种形式的该如何写呢。先看看代码吧

　　工具类和测试对象

public class XmlTextWriterTest : XmlTextWriter    {        public XmlTextWriterTest(Stream w, Encoding encoding)            : base(w, encoding)        {        }        public XmlTextWriterTest(TextWriter w)            : base(w)        { }        public XmlTextWriterTest(string filename, Encoding encoding)            : base(filename, encoding)        { }        public override void WriteEndElement()        {            base.WriteFullEndElement();        }    }    public static class Utility    {        public static string XMLSerialization(object obj)        {            string result = string.Empty;            if (obj != null)            {                try                {                    XmlSerializerNamespaces xmlns = new XmlSerializerNamespaces();                    xmlns.Add(string.Empty, string.Empty);                    XmlSerializer xmlSerializer = new XmlSerializer(obj.GetType());                    using (MemoryStream memoryStream = new MemoryStream())                    {                        XmlTextWriterTest writer = new XmlTextWriterTest(memoryStream, Encoding.Default);                        writer.Formatting = Formatting.Indented;                        xmlSerializer.Serialize(writer, obj, xmlns);                        writer.Flush();                        writer.Close();                                                result = Encoding.Default.GetString(memoryStream.ToArray());                    }                }                catch (Exception ex)                {                    throw ex;                }            }            return result;        }        public static T XMLDeSerialization
     
      (string xml)        {            T result = default(T);            XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));            try            {                               using (StringReader stringReader = new StringReader(xml))                {                    result = (T)xmlSerializer.Deserialize(stringReader);                }            }            catch (Exception ex)            {                throw ex;            }            return result;        }    }    [Serializable]    [XmlRoot("school")]    public class TestObject    {        [XmlAttribute("descri")]        public string descri = "Eddy's xml serializaion demo";        [XmlElement("English")]        public English english;        [XmlElement("Chinese")]        public Chinese chinese;    }    public class English    {        [XmlElement("Teacher")]        public string Teacher = string.Empty;        [XmlElement("Room")]        public string Room = "202";    }    public class Chinese    {        [XmlElement("Teacher")]        public string Teacher = "Eddy";        [XmlElement("Room")]        public string Room = "203";        [XmlElement("Students")]        public Students students;    }    public class Students    {        [XmlElement("Student")]        public List
      
        student;    }    public class Student    {        [XmlAttribute("Name")]        public string Name = string.Empty;        [XmlAttribute("No")]        public string No = string.Empty;        [XmlAttribute("Age")]        public string Age = "19";    }
      
     

　　调用示例

TestObject obj = new TestObject()            {                chinese = new Chinese()                {                    students = new Students()                    {                        student = new List
     
      (){                           new Student(),                           new Student()                        }                    }                },                english = new English()            };            string xml = Utility.XMLSerialization(obj);            TestObject obj1 = Utility.XMLDeSerialization
      
       (xml);
      
     

 

　　达到目的的关键就是下面这一部分代码，没错，重写了WriteEndElement方法。从字面意思可以看出，它就是用来写完整的结束标志，如：<node></node>的。　　

public override void WriteEndElement()        {            base.WriteFullEndElement();        }

　　好了，去看电影了，雨果看了半集，继续。