Soap response return values (Fiddler) but in code

问题:

My scenario : I have added a service reference and using proxy classes to call a certain soap service. When i query the soap service and the response contain only ONE set of values it works perfectly but if i query a certain surname for example which will return a SET OF values instead the code show response is null even thought when checking using Fiddler the values are being returned.

SoapService.queryWebServiceSoapPortClient client = new SoapService.queryWebServiceSoapPortClient();
        client.ClientCredentials.UserName.UserName = userID;
        client.ClientCredentials.UserName.Password = Password;

        SoapService.qwsInput query1 = new SoapService.qwsInput();
        SoapService.queryResponse response = new SoapService.queryResponse();

        query1.userId = userID;
        query1.pass = Password;
        query1.queryId = queryId;
        query1.qwsInputParams = InputParam;

        query a = new query();

        a.queryInput = query1;

        try
        {


            response = client.query(a);
        }
        catch (Exception error)
        {

            var b = error.ToString();
        }