Introduction to Endpoint in WCF: Part 2

WCF Endpoints

Every service has a unique address and this unique address has the three attributes Address, Binding, and Contract. In other words, we can say an endpoint is a combination of address, binding, and contract. If you are unfamiliar with address, binding and contract then please read my previous article Introduction to WCF: Part 1. In this article, I will give you a short note about these three attributes of endpoints.

Address: contains information about where a service can be found.
Binding: contains information about how a client can communicate with a service.
Contract: It's an agreement between service and client.

There is one more property in an endpoint, behavior. Behavior is not an attribute of an endpoint.
Behavior: A set of behaviors that specify local implementation details of the endpoint.

Let me describe using an example. I am using my previous demo project.

In ImyService.cs

namespace myFirstApp
{
[ServiceContract]
public interface IMyService
{
[OperationContract]
int AddTwoNo(int intFirstNo, int intSecondNo);
}
}

In MyService.svc.cs

namespace myFirstApp
{
public class MyService : IMyService
{
public int AddTwoNo(int intFirstNo, int intSecondNo)
{
return intFirstNo + intSecondNo;
}
}
}

Endpoint using web.config

<?xml version="1.0"?>
<configuration>
<appSettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
</appSettings>
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5"/>
</system.web>
<system.serviceModel>
<services>
<service name="myFirstApp.MyService" behaviorConfiguration="serviceBehaviour">
<endpoint address="addTwo" binding="basicHttpBinding" contract="myFirstApp.ImyService"></endpoint>
<host>
<baseAddresses>
<add baseAddress="http://localhost:36246/"/>
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="serviceBehaviour">
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<protocolMapping>
<add binding="basicHttpsBinding" scheme="https" />
</protocolMapping>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
<directoryBrowse enabled="true"/>
</system.webServer>
</configuration>

Let's update my service reference.

In default.aspx

<table>
<tr><td>First No</td><td><asp:TextBox ID="txtFirst" runat="server"></asp:TextBox></td></tr>
<tr><td>Second No</td><td><asp:TextBox ID="txtSec" runat="server"></asp:TextBox></td></tr>
<tr><td colspan="2"><asp:Button ID="btnAdd" runat="server" Text="Add" OnClick="btnAdd_Click" /></td>
</tr>
<tr><td colspan="2"><asp:Label ID="lblResult" runat="server"></asp:Label></td></tr>
</table>

In default.aspx.cs

using System;
namespace WCFClientApp
{
public partial class _default : System.Web.UI.Page
{
protected void btnAdd_Click(object sender, EventArgs e)
{
int intFirstNo = 0, intSecNo = 0, intResult = 0;
intFirstNo = Convert.ToInt16(txtFirst.Text);
intSecNo = Convert.ToInt16(txtSec.Text);
WCFReference.MyServiceClient client = new WCFReference.MyServiceClient();
intResult = client.AddTwoNo(intFirstNo, intSecNo);
lblResult.Text = "Result is :"+intResult;
client.Close();
}
}
}

Run the application and get the expected results.

I hope this article is helpful to you.

Next Article >> How to Make Changes to WCF Service Without Breaking Client in WCF: Part 3

6 Comments

Join the conversation! Your thoughts help the community grow.

Pankajkumar Patel7y ago
Good one ...
Pramod Thakur10y ago
thanks Kalaivanan E..
ravi thakur11y ago
it is nice 4 helping friends
Kalaivanan E11y ago
good
Joginder Banger12y ago
Good Job sir..of course this is very helpful for me.
- Pramod Thakur12y ago
  thank you :)