获取xml文件的属性值

我遇到了XML的问题，并在XML文件中写入了一些信息。
我得到了几个描述我的XML的xsd文件。我用"xsd/c testfile1.xsd testFile2.xsd..."等创建了一个大的。cs文件。一切都很顺利，看起来也很好。
但如果我创建一个类，即testfile1。Xsd，看起来像"<xs:complexType name="Header">"里面有一些普通的x元素，还有"<xs:attribute name="version" default="1.0.0.0"/>"。这被翻译成:

"public Header() {
 this.versionField = "1.0.0.0";}" 

在生成的类'Header'中。它还得到了这个字段:private string versionField;

。(当然，还有其他几个私人领域，但这些都很好。)因此，我创建了所有类的实例，用数据填充它们并将其写入xml文件，如下所示:

 - XmlSerializer XmlSerRoot = new XmlSerializer(typeof(RootInformation))
   (the root of my xml!) 
 - StringWriterWithEncoding strWriter = new StringWriterWithEncoding(Encoding.GetEncoding("iso-8859-1"));
 - XmlDocument documentInXML = new XmlDocument();
 - XmlSerRoot.Serialize(strWriter, rootInformation); (Here is the XML, filled with values, and the Header.version got the value 1.0.0.0) 
 - string XmlString;
 - XmlString = strWriter.ToString(); (Here I can look at the created xml when debugging in VS and now the version-information is gone)
 - documentInXML.LoadXml(XmlString);
 - documentInXML.Save(myPath);

但是当我查看xml文件时，这个<Header>没有任何类似的版本。我想让它看起来像:<Header version="1.0.0.0">
我甚至尝试在代码中这样做:

Header header = new Header(); 
header.version = header.version; 
and
with header.version = "1.0.0.0";

但是标签中仍然没有版本文本。所有其他标签都有自己的价值。只是这个<Header>丢失了这个额外的信息。
有人有小费吗?我需要在很多地方用上它。其他一切都很好。

问候,/E

下面是一段示例代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Serialization;
using System.IO;
using System.Xml;
namespace TestAppXML
{
    class Program
    {
        static void Main(string[] args)
        {
            RootInfo rootInfo = new RootInfo();
            rootInfo.RootText = "This is the Root!";
            Header header = new Header();
            header.TestHeader = "This is HeaderText!";
            rootInfo.Header = header;
            XmlSerializer XmlSerRoot = new XmlSerializer(typeof(RootInfo));
            StringWriterWithEncoding strWriter = new StringWriterWithEncoding(Encoding.GetEncoding("iso-8859-1"));
            XmlDocument documentInXML = new XmlDocument();
            XmlSerRoot.Serialize(strWriter, rootInfo);
            string XmlString;
            XmlString = strWriter.ToString();
            documentInXML.LoadXml(XmlString);
            strWriter.Close();
            documentInXML.Save(@"C:'TestXml.xml");
        }
    }
    /// <remarks/>
    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://acme.com")]
    [System.Xml.Serialization.XmlRootAttribute(Namespace = "http://acme.com", IsNullable = false)]
    public partial class RootInfo
    {
        private Header headerField;
        private string rootTextField;
        public Header Header
        {
            get { return this.headerField; }
            set { this.headerField = value; }
        }
        [System.Xml.Serialization.XmlElementAttribute(DataType = "normalizedString")]
        public string RootText
        {
            get { return this.rootTextField; }
            set { this.rootTextField = value; }
        }
    }
        [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.0.30319.1")]
        [System.SerializableAttribute()]
        [System.Diagnostics.DebuggerStepThroughAttribute()]
        [System.ComponentModel.DesignerCategoryAttribute("code")]
        [System.Xml.Serialization.XmlTypeAttribute(Namespace = "http://acme.com")]
        public partial class Header
        {
            private string testHeaderField;
            private string versionField;
            public Header()
            {
                this.versionField = "1.0.0.0";
            }
            /// <remarks/>
            [System.Xml.Serialization.XmlElementAttribute(DataType = "normalizedString")]
            public string TestHeader
            {
                get { return this.testHeaderField; }
                set { this.testHeaderField = value; }
            }
            [System.Xml.Serialization.XmlAttributeAttribute()]
            [System.ComponentModel.DefaultValueAttribute("1.0.0.0")]
            public string version
            {
                get { return this.versionField; }
                set { this.versionField = value; }
            }
        }
        class StringWriterWithEncoding : StringWriter
        {
            private Encoding MyEncoding;
            public StringWriterWithEncoding(Encoding encoding)
                : base()
            {MyEncoding = encoding;}
            public override Encoding Encoding
            {
                get{return MyEncoding;}
            }
        }
    }