How to Call a WebService without using WebReference?

Question

I want to know if there is someone who had use a Class to Call a WebService, this WS receives an integer after the organizational references and responds into a json file,

Actually my issue is to call the webservice without using a webreference, and read the json file and parse it into a dictionary ,

I appreciate your help

Best Regards, i let you my code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Net;
using Dimex.ChangeSAP.Core.Utilities;

namespace Dimex.ChangeSAP.Core.Utilities
{
    class ConsumirWebService
    {
        public void ConsumirWS()
        {

            Dimex.ChangeSAP.Core.Entities.Seguridad.Usuario users = new Dimex.ChangeSAP.Core.Entities.Seguridad.Usuario();
            int idUsuaro = users.IdUsuario;

            try
            {

                System.Net.WebRequest req = System.Net.WebRequest.Create("http://192.168.8.97/PassportPruebas/api/partners?enterprise_system_id=1&organizational_reference=" + idUsuaro);
                //req.Proxy = new System.Net.WebProxy(ProxyString, true);
                //Add these, as we're doing a POST
                req.ContentType = "application/x-www-form-urlencoded";
                req.Method = "POST";
                //We need to count how many bytes we're sending. 
                //Post'ed Faked Forms should be name=value&
                string postData = "OPERATION_NAME=ADD_REQUEST&TECHNICIAN_KEY=90BA&INPUT_DATA=" + sendXML;
                byte[] bytes = System.Text.Encoding.ASCII.GetBytes(postData);
                req.ContentLength = bytes.Length;
                System.IO.Stream os = req.GetRequestStream();
                os.Write(bytes, 0, bytes.Length); //Push it out there
                os.Close();
                System.Net.WebResponse resp = req.GetResponse();
                if (resp == null)
                {
                    return null;
                }
                System.IO.StreamReader sr =
                      new System.IO.StreamReader(resp.GetResponseStream());

                string respuesta = sr.ReadToEnd().Trim();
                return respuesta;

            }
            catch (Exception ex)
            {
                return "";
                //throw or return an appropriate response/exception
            }


        }
    }
}

no way? are you sure ? i had hours looking for answers, but actually i resolved by my self thank you — daevst
– daevst, Commented Jul 18, 2013 at 16:33

muek · Accepted Answer · 2015-03-04 10:19:12Z

2

Well Actually here is my code for anyone with this kind of issue too,

        public static string LlamarWebService(string url)
        {

            try
            {
                System.Net.WebRequest req = System.Net.WebRequest.Create(url);

                req.ContentType = "application/json";
                req.Method = "GET";

                System.Net.WebResponse resp = req.GetResponse();
                if (resp == null) return null;
                System.IO.StreamReader sr =
                      new System.IO.StreamReader(resp.GetResponseStream());

                string respuesta = sr.ReadToEnd().Trim();
                return respuesta;

            }
            catch (Exception ex)
            {
                throw ex;
                // return "";
                //throw or return an appropriate response/exception
            }
        }

edited Mar 4, 2015 at 10:19

muek

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answered Aug 8, 2013 at 15:50

daevst

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1 Comment

n8wrl Over a year ago

What is the purpose of your catch if you're just going to rethrow it? What about cleaning up resources like req and resp and sr? using() is your friend!

Prash · Accepted Answer · 2013-08-07 07:06:22Z

1

you can create a proxy class using wsdl utility or svcutil in visualstudiocommand prompt enter command wsdl.exe /out:[path and name of the file] /language:CS

answered Aug 7, 2013 at 7:06

Prash

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