C# XML序列化的工作方式与预期不同

我得到了一个具有这种结构的

.xsd

文件（我还使用一个VisualStudio工具为它生成了类）

这就是我的方法生成xml的方式

<?xml version="1.0" encoding="utf-8"?>
<data_container xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/">
  <other_propertiesField>
    <introduction_picField>a</introduction_picField>
    <introduction_txtField>b</introduction_txtField>
  </other_propertiesField>
  <peopleField>
    <data_containerPerson>
      <p_idField i:nil="true" />
      <some_dataField>
        <sxField>F</sxField>
        <valueField i:nil="true" />
      </some_dataField>
    </data_containerPerson>
  </peopleField>
</data_container>

A.
B
F

这就是它的假设（在visualstuido中生成）

一些数据1
一些数据2
一些数据3
导言
导言

---

为什么会这样？怎么了？我怎样才能使它正确呢？

哦，我只是用了

XmlSerializer

而不是

DataContractSerializer

，现在它工作正常了

但是，为什么

DataContractSerializer

会这样工作呢

static void xmlGenTest()
        {
            var doc = new XDocument();

            var x = new data_container();
            x.other_properties = new data_containerOther_properties { introduction_pic = "a", introduction_txt = "b" };

            x.people = new data_containerPerson[1];
            x.people[0] = new data_containerPerson
            {
                p_id = "1",
                some_data = new data_containerPersonSome_data { sx = data_containerPersonSome_dataSX.F }
            };
            using (var writer = doc.CreateWriter())
            {
                var serializer = new XmlSerializer(x.GetType());
                serializer.Serialize(writer, x);
            }

            Console.WriteLine(doc.ToString());
            Console.ReadKey();
            doc.Save("C:\\temp\\data.xml");

        }

<?xml version="1.0" encoding="utf-8"?>
<data_container xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/">
  <other_propertiesField>
    <introduction_picField>a</introduction_picField>
    <introduction_txtField>b</introduction_txtField>
  </other_propertiesField>
  <peopleField>
    <data_containerPerson>
      <p_idField i:nil="true" />
      <some_dataField>
        <sxField>F</sxField>
        <valueField i:nil="true" />
      </some_dataField>
    </data_containerPerson>
  </peopleField>
</data_container>

<?xml version="1.0" encoding="utf-8"?>
<data_container xmlns="http://tempuri.org/XMLSchema.xsd">
  <people>
    <person p_id="ID1">
      <some_data sx="M">some_data1</some_data>
    </person>
    <person p_id="ID2">
      <some_data sx="F">some_data2</some_data>
    </person>
    <person p_id="ID3">
      <some_data sx="M">some_data3</some_data>
    </person>
  </people>
  <other_properties>
    <introduction_txt>introduction_txt1</introduction_txt>
    <introduction_pic>introduction_pic1</introduction_pic>
  </other_properties>
</data_container>

static void xmlGenTest()
        {
            var doc = new XDocument();

            var x = new data_container();
            x.other_properties = new data_containerOther_properties { introduction_pic = "a", introduction_txt = "b" };

            x.people = new data_containerPerson[1];
            x.people[0] = new data_containerPerson
            {
                p_id = "1",
                some_data = new data_containerPersonSome_data { sx = data_containerPersonSome_dataSX.F }
            };
            using (var writer = doc.CreateWriter())
            {
                var serializer = new XmlSerializer(x.GetType());
                serializer.Serialize(writer, x);
            }

            Console.WriteLine(doc.ToString());
            Console.ReadKey();
            doc.Save("C:\\temp\\data.xml");

        }