如何在没有xmlns的情况下将文档序列化为XML

Question

我正在尝试将对象序列化为XML。我有一个问题，默认情况下会添加xsi和xsd。我添加了以下代码来删除命名空间：

public string CommitDocumentToRepository(string extension, byte[] fileBytes)
{
    //Convert to PDF
    byte[] loPDFFileBytes;

    ConversionService.ContentResponse loResponse = new DocumentAdapter.ConversionService.ContentResponse();

    using (ConversionService.CustomPDFSoapClient loConversionServiceClient = new DocumentAdapter.ConversionService.CustomPDFSoapClient())
    {
        loResponse = loConversionServiceClient.OfficeToPDFContent(fileBytes, extension);
        loPDFFileBytes = loResponse.ContentPDF;
    }

    if (loPDFFileBytes != null)
    {
        xform loDocContainer = new xform();
        xformInstance loDocProperties = new xformInstance();

        loDocProperties.FIRST_NAME= this.FirstName;
        loDocProperties.LAST_NAME= this.LastName;
        loDocProperties.MID_NAME = this.MidName;


        loDocContainer.instance = loDocProperties;

        string lsTempFile = System.IO.Path.GetTempFileName();
        string lsXMLofProperties = loDocContainer.Serialize();

        XmlDocument loDoc = new XmlDocument();


        loDoc.LoadXml(lsXMLofProperties);
        loDoc.Save(lsTempFile);

        byte[] loFilePropertiesXML = Common.StreamFile(lsTempFile);
        string lsReturnValue = string.Empty;

        try
        {
            using (ISCommittalService.CommittalSoapClient loCommittalServiceClient = new DocumentAdapter.ISCommittalService.CommittalSoapClient())
            {
                lsReturnValue = loCommittalServiceClient.CommitDocumentByte(loPDFFileBytes, ".PDF", loFilePropertiesXML);
            }
        }
        catch (Exception loException)
        {
            ADConnectionException loConnectionException = new ADConnectionException(loException);
            throw loException;
        }

        return lsReturnValue;
    }
    else
        return string.Empty;


}

 public string Serialize()
    {
       XmlSerializerNamespaces ns = new XmlSerializerNamespaces();

       ns.Add("", "");

       XmlWriterSettings xws = new XmlWriterSettings();
       xws.OmitXmlDeclaration = true;
       xws.Encoding = Encoding.UTF8; 
       StringBuilder loBuilder = new StringBuilder();
       XmlSerializer formatter = new XmlSerializer(this.GetType());

       using (StringWriter loWriter = new StringWriter(loBuilder))
         {
            formatter.Serialize(loWriter, this,ns);
         }
       return loBuilder.ToString();
    }

这是输出：

<?xml version="1.0" encoding="UTF-16"?>
  <xform>
    <instance>

    <FIRST_NAME xmlns:d3p1="http://www.w3.org/2001/XMLSchema-instance" 
    d3p1:type="q4:string" 
    xmlns:q4="http://www.w3.org/2001/XMLSchema">John</FIRST_NAME>

    <MID_NAME xmlns:d3p1="http://www.w3.org/2001/XMLSchema-instance" 
    d3p1:type="q3:string" xmlns:q3="http://www.w3.org/2001/XMLSchema"/>

    <LAST_NAME xmlns:d3p1="http://www.w3.org/2001/XMLSchema-instance" 
    d3p1:type="q5:string" 
    xmlns:q5="http://www.w3.org/2001/XMLSchema">Doe</LAST_NAME>

    </instance>
   </xform>

如何从每个对象中删除添加的xmlns（xmlns:d3p1="http://www.w3.org/2001/XMLSchema-instance" d3p1:type="q4:string" xmlns:q4="http://www.w3.org/2001/XMLSchema"）？ 如何将其更改为utf-8，因为我的代码xws.Encoding = Encoding.UTF8;似乎没有任何影响。