·         [WebService(Namespace = "http://tempuri.org/")]

·             [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

·             public class WebService4JQuery : System.Web.Services.WebService

·             {

·                 

·                 public TestHeader THeader;

·          

·                 [WebMethod]

·                 [SoapHeader("THeader")]

·                 public string TestSoapHeader()

·                 {

·          

·                     return "THeader Value: " + THeader.HeaderData;

·                 }

·             }

·          

·             public class TestHeader : SoapHeader

·             {

·                 public string HeaderData { get; set; }

·             }

#JQuery code in the webform page

        function CallWebMethodWithHeader() {

            var soapXML =

            "
     
      " +
     

            "  
     
      " +
     

                "
     
      " +
     

                    "
     
      111111111111
     " +

                "" +

            "" +

            "
     
      " +
     

                "
     " +

            "" +

            "";

            $.ajax({

                url: "WebService4JQuery.asmx?op=TestSoapHeader",

                type: "POST",

                dataType: "xml",

                contentType:"text/xml; charset=utf-8",

                data: soapXML,

                beforeSend: function (xhr) {

                    xhr.setRequestHeader('SOAPAction', 'http://tempuri.org/TestSoapHeader');

                },

                success: function (data) {

                    alert("webmethod call success");

                },

                error: function (err) {

                    alert("webmethod call failed");

                }

            });

        }