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

[Roger He]

I tried to use it in following way.

asmx:
    [WebMethod]
    public string XmlTest([XmlAnyElement]  XmlElement test)
    {
        return "";
    }

js:
var xmldata="<Book>a</Book>
var par = { "test": xmldata};
 $.ajax({
            type: 'post',
            url: "WebService/DatabaseWS.asmx/XmlTest",
            processData: false,
            data: data,
            success: function() { alert('yes'); },
        },


But it seems wrong, and didn't call the XmlTest method, Anyone can
help me?