parsererror in ajax jquery calling a webservice

parsererror in ajax jquery calling a webservice

I have written a webservice like below: 
  1. [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json, XmlSerializeString = false, UseHttpGet = true)]
    public string GetNews(int tes)
    {
        
    return tes.ToString();
    }
and I want to use this function in client so I wrote this lines:
  1. $.ajax({
                    dataType
    : "jsonp",
                    success
    : function (d) {
                        $
    ('.widget.yellow').html(d.d);
                    
    },
                    error
    : function (xhr, textStatus, errorThrown) {
                        $
    ('.widget.yellow').html(textStatus);
                    
    },
                    data
    : { tes: '170' },
                    url
    : "http://localhost:1122/Services/MyService.asmx/GetNews?format=json"
                
    });
but I get error.The textStatus is "parsererror" and xhr.statusText is "success" and xhr.status is "200" and xhr.readyState is "4". I need some help.