Create xml in web service using Soap Header

Hi,

how do i create xml on my desire in web service using Soap Header

forExample i want that when i test the xml it should be create like this

<Employee>
<EmployeeDetails>
<Name>Taha</Name>
<Designation>Software Engineer</Designation>
<Company>Abc Limited<Company>
</EmployeeDetails>

<PersonalDetails>
<DOB>XX-XX-XXXX</DOB>
<BloodGroup>XX</BloodGroup>
<Status>Single</Status>
</PersonalDetails>
</Employee>

how should i create as above xml using SOAP Header attribute, i create something like the all the tags EmployeeDetails and all the tag under EmployeeDetails, but unable to add the EmployeeDetails tag under Employee tag here is my code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;

[WebService(Namespace = "S:employeeDetail.Summry")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]

public class Service : System.Web.Services.WebService
{
    public class EmployeeDetail : SoapHeader
    {
        public string Name = "0.0";
        public string Designation = "1";
        public string Company = "Credit";
    }
        
    public Service () {

        //Uncomment the following line if using designed components
        //InitializeComponent();
    }
    public EmployeeDetail employeeDetail;

    [WebMethod]
    [SoapHeader("employeeDetail", Direction = SoapHeaderDirection.InOut)]
    public void HelloWorld()
    {
        if (employeeDetail == null) { employeeDetail = new EmployeeDetail(); }
    }
}