WCF Test Client

WCF Test Client  is an automation tool to test WCF service testing .It is inbulid in VS 2010 .  ( C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\WcfTestClient.exe )
http://blogs.msdn.com/b/rjacobs/archive/2011/09/23/using-the-wcf-test-client-to-test-your-workflow-service.aspx

http://www.dotnetfunda.com/articles/article816-understanding-the-basics-of-wcf-service-.aspx

What is WCF?
·         WCF stands for Windows Communication Foundation.
·         WCF is advanced API (Application Programming Interface) for creating distributed applications using .NET framework.
·         It is introduced in .NET 3.0.
·         Distributed system in its simplest form is two executable running and exchanging data.
·         WCF API is found in System.ServiceModel namespace.
·         WCF is based on basic concepts of Service oriented architecture (SOA)

How to test WCF service by using Visual Studio 2010 – WCF Test Client tool ?

"WCF Test Client" is a automation tool to test the WCF Service. It is in build tool in Visual studio 2010.By default, you cannot see the WCF Test Client option in VS2010.

So we have to add this tool by using below steps :

·         Open the Visual Studio 2010

·         Go to "Tools" menu

·         Click the “External tools”

·         click Add button

·         Provide a name “WCF Test Client” (any name) in Title field

·         Browse the WcfTestClient.exe from the path  “C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\WcfTestClient.exe”

·         click OK.

Now you can see the name (you provided) under the Tools menu.

Open the tool by selecting the menu Tools > WCF Test Client. The tool looks to be very simple to use. Just by right-clicking the option “My Service project”, it will prompt for the service URL. (Ex. http://localhost/applicationService/service1.svc). After adding the service URL, it will list out all the methods in the service on the left-side panel.

In order to Invoke the method, double-click any method it will list the details of the request like (Name, Value, Data Type).

To get the results/response, check the option “Start a new proxy” and click Invoke. It will display the results/response.

So now, while trying to invoke a particular method, I got the below exception like

"The maximum message size quota for incoming messages (65536) has been exceeded. To increase the quota, use the MaxReceivedMessageSize property on the appropriate binding element."

After googling, I found a solution like:

In the Client.config file, navigate to the section “binding name” and increase the value for the attributes maxBufferSize and

maxReceivedMessageSize to “2000000”.By Default, MaxBufferSize = “65536”

By default, it will prompt to reload the service and you have to click Yes/Ok. Now invoke the method, it will display the result..

 Service1.svc.cs

      using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;

namespace WCF_Service_sample_application
{
    /// <summary>
    /// Summary description for Service1
    /// </summary>
    //[WebService(Namespace = "http://tempuri.org/")]
    //[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    //[System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
    // [System.Web.Script.Services.ScriptService]
    public class Service1 : IService1
    {

        public string Add(int a, int b)
        {
            string c = string.Empty;
            c = (a + b).ToString();
            return c;

        }

        public int Multiple(int a, int b)
        {         
            return a*b;
        }

        public int subtract(int a,int b)
        {
            return a - b;
        }

        public int divide(int a, int b)
        {
            return a / b;      
        }
        //[WebMethod]
        //public string simpleMethod(String srt)
        //{
        //    return "Hello " + srt;
        //}

        //[WebMethod]
        //public int anotherSimpleMethod(int firstNum, int secondNum)
        //{
        //    return firstNum + secondNum;
        //}

    }
}

  IService1.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 WCF_Service_sample_application
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together.
    [ServiceContract]
    public interface IService1
    {

        [OperationContract]
        string Add(int a,int b);

        [OperationContract]
        int Multiple(int a, int b);

        [OperationContract]
        int subtract(int a, int b);

        [OperationContract]
        int divide(int a, int b);
        //[OperationContract]
        //CompositeType GetDataUsingDataContract(CompositeType composite);

        // TODO: Add your service operations here
    }