c# - Get attribute values to the XML-File -

i got issue xml, , write information on xml-file.
got several xsd-files describing xml. created 1 big .cs-file "xsd/c testfile1.xsd testfile2.xsd..." etc. , went nice , looks good.
if take 1 created class i.e. testfile1.xsd, looks "<xs:complextype name="header">" , inside 1 there ordinary xs:element , stuff, this: "<xs:attribute name="version" default="1.0.0.0"/>". translated to:

"public header() {  this.versionfield = "1.0.0.0";}"  

in generated class 'header'. , got field: private string versionfield;

. (there of course couple of other private fields well, works good.). create instances of classes, fill them data , write xml-file this:

 - xmlserializer xmlserroot = new xmlserializer(typeof(rootinformation))    (the root of xml!)   - stringwriterwithencoding strwriter = new stringwriterwithencoding(encoding.getencoding("iso-8859-1"));  - xmldocument documentinxml = new xmldocument();  - xmlserroot.serialize(strwriter, rootinformation); (here xml, filled values, , header.version got value 1.0.0.0)   - string xmlstring;  - xmlstring = strwriter.tostring(); (here can @ created xml when debugging in vs , version-information gone)  - documentinxml.loadxml(xmlstring);  - documentinxml.save(mypath); 

but when @ xml-file <header> not have version. want like: <header version="1.0.0.0">
tried in code like:

header header = new header();  header.version = header.version;  , header.version = "1.0.0.0"; 

but still it's no version-text in tag. other tags got value. <header> loose information.
got tip? there lot of places need work. else working fine.

regards, /e

here piece of example-code:

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 root!";             header header = new header();             header.testheader = "this 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         {             { return this.headerfield; }             set { this.headerfield = value; }         }          [system.xml.serialization.xmlelementattribute(datatype = "normalizedstring")]         public string roottext         {             { 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             {                 { return this.testheaderfield; }                 set { this.testheaderfield = value; }             }              [system.xml.serialization.xmlattributeattribute()]             [system.componentmodel.defaultvalueattribute("1.0.0.0")]             public string version             {                 { 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;}             }         }     } 

nevermind, think knov issue. it's because xsd.exe creates 'defaultvalueattribute' fields. prevent field in xml. maybe xsd-switch have done that, dunno...