Can't connect to rest webservice through c# client

Question

I am trying to create a c# client application to my RESTful webservice.

I've added the web reference (ServiceReference1) to the client application but I'm getting errors like endpoint configuration does not exist for 'UserService1.svc'.

I'm aware that 'add service reference' does not create all the required configurations when using a Rest Service, but I really can't see where I'm going wrong!

Here's my files

Client application

namespace WebServiceClient
{
    /// 
    /// Interaction logic for MainWindow.xaml
    /// 
    public partial class MainWindow : Window
    {
        UserService1Client webService;
        List userList = new List();

        public MainWindow()
        {
            InitializeComponent();            
            webService = new UserService1Client();
            serviceMethods();
        }

        private void serviceMethods()
        {
            string[] results = webService.GetUsersNames();
        }
    }
}

Client - web.config

Service - Web.config

IUserService.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;

namespace WcfRestSample
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IUserService1" in both code and config file together.
    [ServiceContract]
    public interface IUserService1
    {
        [OperationContract]
        [WebGet(ResponseFormat = WebMessageFormat.Xml)]
        List GetUsersNames();
    }
}

UserService1.svc

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;

namespace WcfRestSample
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "UserService1" in code, svc and config file together.
    // NOTE: In order to launch WCF Test Client for testing this service, please select UserService1.svc or UserService1.svc.cs at the Solution Explorer and start debugging.
    public class UserService1 : IUserService1
    {
        public List GetUsersNames()
        {
            using (cs4_databaseEntities entities = new cs4_databaseEntities())
            {
                return entities.Users.Select(user => user.Name).ToList();
            }
        }
    }
}

Hopefully someone can help me out here!!

Charlie Ou Yang · Accepted Answer

First of all for a RESTFUL service, you need to declare a webhttpbinding, and not a basichttpbinding (this is for SOAP services). In your REST service, you should have have these configurations

1) Declare your service and its endpoint

Service name will be [project name].[service name] Behavior configuration will be same name as the behavior you declare in the next step Binding must be webHttpBinding because you want it as REST. If you want SOAP, you declare as basicHttpBinding Contract is the [project name].[interface name] Behavior configuration in the endpoint will be the name you declare in next step

2) Declare the service behavior (usually default)

Behavior name can be anything, but it will be used to match BehaviorConfiguration you declared in step 1 Leave the rest alone

3) Delcare your endpoint behavior

Beavior name can be anything, but it will be used to match the behaviorConfiguration in endpoint.

In the end, this is what the web.config should look like for a simple REST service:

After your web.config is done, this is a sample WCF REST Service and its respective C# Client

In order to send data through a POST or PUT, you need to construct your data correctly according to the WCF service. Here is basically what you need (Just change the POST to PUT for your application)

1) WCF Service Interface

[OperationContract]
[WebInvoke(Method = "POST",
    UriTemplate = "GetData",
    RequestFormat = WebMessageFormat.Xml,
    BodyStyle = WebMessageBodyStyle.Bare)]
string GetData(DataRequest parameter);

2) WCF Service Implementation

public string GetData(DataRequest parameter)
{
    //Do stuff
    return "your data here";
}

3) Data Contract in your WCF service (In this case it's DataRequest)

[DataContract(Namespace = "YourNamespaceHere")]
public class DataRequest
{
    [DataMember]
    public string ID{ get; set; }
    [DataMember]
    public string Data{ get; set; }
}

4) Client sending the data must have the data constructed properly! (C# console app in this case)

static void Main(string[] args)
{
    ASCIIEncoding encoding = new ASCIIEncoding();
    string SampleXml = "" +
                                    "" +
                                    yourIDVariable +
                                    "" +
                                    "" +
                                    yourDataVariable +
                                    "" +
                                "";

    string postData = SampleXml.ToString();
    byte[] data = encoding.GetBytes(postData);

    string url = "http://localhost:62810/MyService.svc/GetData";

    string strResult = string.Empty;

    // declare httpwebrequet wrt url defined above
    HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(url);
    // set method as post
    webrequest.Method = "POST";
    // set content type
    webrequest.ContentType = "application/xml";
    // set content length
    webrequest.ContentLength = data.Length;
    // get stream data out of webrequest object
    Stream newStream = webrequest.GetRequestStream();
    newStream.Write(data, 0, data.Length);
    newStream.Close();

    //Gets the response
    WebResponse response = webrequest.GetResponse();
    //Writes the Response
    Stream responseStream = response.GetResponseStream();

    StreamReader sr = new StreamReader(responseStream);
    string s = sr.ReadToEnd();

    return s;
}

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