Web Service without adding a reference?

I have 3 web services added to service references in a class library.(This is a sample project for an API use) I need to move these into my project but i cannot add the service references because of the security issues(By security issues i mean the service only responds to one ip address and that is the ip address of our customer’s server.) Is there a way to generate a class like using “Ildasm.exe” for that particaluar web service?

Answers:

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Method 1

You can use this class. I didn’t remember where i found the basic code, i added some methods and convert to class before.

public class WebService
{
    public string Url { get; set; }
    public string MethodName { get; set; }
    public Dictionary<string, string> Params = new Dictionary<string, string>();
    public XDocument ResultXML;
    public string ResultString;

    public WebService()
    {

    }

    public WebService(string url, string methodName)
    {
        Url = url;
        MethodName = methodName;
    }

    /// <summary>
    /// Invokes service
    /// </summary>
    public void Invoke()
    {
        Invoke(true);
    }

    /// <summary>
    /// Invokes service
    /// </summary>
    /// <param name="encode">Added parameters will encode? (default: true)</param>
    public void Invoke(bool encode)
    {
        string soapStr =
            @"<?xml version=""1.0"" encoding=""utf-8""?>
            <soap:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" 
               xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" 
               xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/"">
              <soap:Body>
                <{0} xmlns=""http://tempuri.org/"">
                  {1}
                </{0}>
              </soap:Body>
            </soap:Envelope>";

        HttpWebRequest req = (HttpWebRequest)WebRequest.Create(Url);
        req.Headers.Add("SOAPAction", ""http://tempuri.org/" + MethodName + """);
        req.ContentType = "text/xml;charset="utf-8"";
        req.Accept = "text/xml";
        req.Method = "POST";

        using (Stream stm = req.GetRequestStream())
        {
            string postValues = "";
            foreach (var param in Params)
            {
                if (encode)
                    postValues += string.Format("<{0}>{1}</{0}>", HttpUtility.UrlEncode(param.Key), HttpUtility.UrlEncode(param.Value));
                else
                    postValues += string.Format("<{0}>{1}</{0}>", param.Key, param.Value);
            }

            soapStr = string.Format(soapStr, MethodName, postValues);
            using (StreamWriter stmw = new StreamWriter(stm))
            {
                stmw.Write(soapStr);
            }
        }

        using (StreamReader responseReader = new StreamReader(req.GetResponse().GetResponseStream()))
        {
            string result = responseReader.ReadToEnd();
            ResultXML = XDocument.Parse(result);
            ResultString = result;
        }
    }
}

And you can use like this

WebService ws = new WebService("service_url", "method_name");
ws.Params.Add("param1", "value_1");
ws.Params.Add("param2", "value_2");
ws.Invoke();
// you can get result ws.ResultXML or ws.ResultString

Method 2

You don’t need to add web service reference to play with web service code: You can manually generate class to play with e.g.:

wsdl.exe /out:d:/Proxy.cs /order http://localhost:2178/Services.asmx

And then you can add this file manually to your project.

Method 3

Here’s an example of how to call a “GET” web service from your C# code:

public string CallWebService(string URL)
{
    HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(URL);
    objRequest.Method = "GET";
    objRequest.KeepAlive = false;

    HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
    string result = "";
    using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
    {
        result = sr.ReadToEnd();
        sr.Close();
    }
    return result;
}

Simply pass it a URL, and it’ll return a string containing the response. From there, you can call the JSON.Net “DeserializeObject” function to turn the string into something useful:

string JSONresponse = CallWebService("http://www.inorthwind.com/Service1.svc/getAllCustomers");

List<Customer> customers = JsonConvert.DeserializeObject<List<Customer>>(JSONresponse);

Hope this helps.

Method 4

You can dynamically change the url of a service reference:

var service = new MyService.MyWSSoapClient();
service.Endpoint.Address = new System.ServiceModel.EndpointAddress("http://localhost:8080/");

Method 5

Yes if you dont want to Add reference wsdl.exe /out:d:/Proxy.cs /order would be the alternative

Method 6

If you using wcf service with json, you can implement sample post method i used in my one of projects. You need newtonsoft json package;

    public static ResponseCL PostPurchOrder(PurchaseOrder order)
    {
        ResponseCL res = new ResponseCL();
        string methodUrl = $"{_main.ws_url}/AddPurchaseOrder";
        var httpWebRequest = (HttpWebRequest)WebRequest.Create(methodUrl);
        httpWebRequest.ContentType = "application/json;";
        //if use basic auth//
        //string username = "user";
        //string password = "1234";
        //string encoded = Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(username + ":" + password));
        //httpWebRequest.Headers.Add("Authorization", "Basic " + encoded);
        httpWebRequest.Method = "POST";
        using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
        {
            streamWriter.Write(JsonConvert.SerializeObject(order));
            streamWriter.Flush();
        }

        var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
        using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
        {
            var result = streamReader.ReadToEnd();
            res = JsonConvert.DeserializeObject<ResponseCL>(result);
        }
        return res;
    }

Another way using Microsoft.AspNet.WebApi.Client package like this;

    public static ResponseCL PostPurchOrder2(PurchaseOrder order)
    {
        ResponseCL res = new ResponseCL();
        using (var client = new HttpClient())
        {
            string methodUrl = $"{_main.ws_url}/AddPurchaseOrder";
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            var response = client.PostAsJsonAsync(methodUrl, order);
            response.Wait();
            if (response.Result.IsSuccessStatusCode)
            {
                string responseString = response.Result.Content.ReadAsStringAsync().Result;
                res = JsonConvert.DeserializeObject<ResponseCL>(responseString);
            }
        }
        return res;
    }

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0