[jQuery] How could we pass a xmldom to a webservice?

the webservice was written by asp.net

[jQuery] How to post a XmlDocument to ASP.NET WebService (*.asmx)

I tried to use it in following way. asmx: [WebMethod] public string XmlTest([XmlAnyElement] XmlElement test) { return ""; } js: var xmldata="a var par = { "test": xmldata}; $.ajax({ type: 'post', url: "WebService/DatabaseWS.asmx/XmlTest",