Android insert ผ่าน Web Services Asp.net แล้วเป็นค่าว่าง รบกวนดูให้หน่อยครับ

SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME1);       
          
          //Use this to add parameters
          request.addProperty("sa",etUserName.getText().toString());
          request.addProperty("sb",etPass.getText().toString());
         
          //Declare the version of the SOAP request
          SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
         
          envelope.setOutputSoapObject(request);
          envelope.dotNet = true;
         
          try {
                HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
               
                //this is the actual part that will call the webservice
                androidHttpTransport.call(SOAP_ACTION1, envelope);
                
               // Toast.makeText(getApplicationContext(),envelope.toString(),Toast.LENGTH_LONG).show();
               
                // Get the SoapResult from the envelope body.
                SoapObject result = (SoapObject)envelope.bodyIn;
                

                if(result != null)
                {
                      //Get the first property and change the label text
                   //  txtCel.setText(result.getProperty(0).toString());
                }
                else
                {
                      Toast.makeText(getApplicationContext(), "No Response",Toast.LENGTH_LONG).show();
                }
          } catch (Exception e) {
              //  e.printStackTrace();
          	 Toast.makeText(getApplicationContext(), e.toString(),Toast.LENGTH_LONG).show();
          }