c# - WCF add attribute to soap body -

i need add attribute body element. how can this?

<soapenv:body wsu:id="body"> 

i'm using xmlserializerformat. code:

f[servicecontract(namespace = "http://tsutomfc")] [xmlserializerformat] public interface iservice {     [xmlserializerformat]     [operationcontract]     responsetype sampletestsmev();  }      [messagecontract]     [xmlserializerformat]     public class responsetype     {         [messageheader]         public securitytype security = new securitytype();         [messageheader]         public smevheader header = new smevheader();         [messagebodymember(namespace = "http://smev.gosuslugi.ru/rev120315")]         public messagetype message = new messagetype();         [messagebodymember(namespace = "http://smev.gosuslugi.ru/rev120315")]         public messagedatatype messagedata = new messagedatatype(); 

}

you can use idispatchmessageinspector enables custom modification of inbound , outbound messages.