ksoap2 呼叫带参数的.Net Webservice有关问题

    //没有参数的    [WebMethod]    public string HelloWorld() {        string str = "Android Call me";        return str;    }    //有参数的    [WebMethod]    public string ShowData(string strValue) {        WriteLog("to Call and str= "+strValue);        if (strValue == null) {            strValue = "strValue is null";        } else if (strValue == "") {            strValue = "str is space";        }                return strValue;    }

  private static final String SOAP_ACTION="http://tempuri.org/HelloWorld";  private static final String METHOD_NAME="HelloWorld";  private static final String SOAP_ACTION2="http://tempuri.org/ShowData";  private static final String METHOD_NAME2="ShowData";  private static final String NAMESPACE="http://tempuri.org";  private static final String URL="http://198.100.100.101/SampleService/Service.asmx";  //呼叫没有参数的 web service  private String CallNoneParamService(){    String result="";    try{      SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);      SoapSerializationEnvelope envelope = new  SoapSerializationEnvelope(SoapEnvelope.VER11);      envelope.dotNet=true;      envelope.setOutputSoapObject(request);      AndroidHttpTransport aht=new AndroidHttpTransport(URL);      aht.call(SOAP_ACTION, envelope);      SoapPrimitive response = (SoapPrimitive)envelope.getResponse();      result = response.toString();    }catch(Exception er){      result=er.toString();    }    return result;  }        //呼叫有参数的Web Service    private String CallParamService(){      String result="";      try{        SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME2);        request.addProperty("strValue", "TEST");        SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);        envelope.dotNet=true;        envelope.setOutputSoapObject(request);        AndroidHttpTransport aht=new AndroidHttpTransport(URL);        aht.call(SOAP_ACTION2, envelope);        SoapPrimitive response = (SoapPrimitive)envelope.getResponse();        result = response.toString();      }catch(Exception er){        result=er.toString();      }      return result;    }