Self
Hosting :
In this post we
will explain about self host service using console application in windows
application. This referred as self hosting WCF service, the exact meaning of
Self Hosted is provides the user to host the
service in any application that could be Console Application or Windows forms
etc. Earlier we saw about What is WCF service on dot net platform. We
can host WCF service in IIS and windows service also.
Service
can also be in-pro i.e. client and service in the same process. Now let's us
create the WCF service which is hosted in Console application. We will also
look in to creating proxy using 'Client
Base' class.
Step 1 :
Step 2 : Add
the System.ServiceModel and System.runtime.serialization reference to the
project.
Step 3 : Now right click the project name in solution
explorer and got to the add new item and
select WCF Service option in window and give name News_Service
and click Add
Once you add this WCF Service some function and
class files added into the solution explorer
Step 4 : an INews_Service interface, Add ServiceContract and OperationContract
attribute to the class and function as shown below. You will know more
information about these contracts in later session. These contracts will expose
method to outside world for using this service.
INews_Service.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
namespace WCF_NewsService
{
[ServiceContract]
public interface INews_Service
{
[OperationContract]
TOInews Getnews(int a);
}
[DataContract]
public class TOInews
{
private int
_id;
private string
_header;
private string
_body;
[DataMember]
public int
ID
{
get { return
_id; }
set { _id = value;
}
}
[DataMember]
public string
Header
{
get { return
_header; }
set { _header = value;
}
}
[DataMember]
public string
Body
{
get { return
_body; }
set { _body = value;
}
}
}
}
Step 5 : Open
New_Service file and right click on INews_Service go to the implement Interface
and delete the DoWork() method which unused for us. And write code.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
namespace WCF_NewsService
{
public class News_Service : INews_Service
{
#region INews_Service Members
public TOInews
Getnews(int a)
{
TOInews objtoinews = new TOInews();
switch (a)
{
case
1:
{
objtoinews.ID = 1;
objtoinews.Header = "Mumbai News";
objtoinews.Body = "2013 Code contest quiz orgnize by TOI";
break;
}
case
2:
{
objtoinews.ID = 2;
objtoinews.Header = "Pune News";
objtoinews.Body = "commonwealth fraud in pune ";
break;
}
case
3:
{
objtoinews.ID = 3;
objtoinews.Header = "Solapur News";
objtoinews.Body = "New IT hub in Solapur";
break;
}
default:
{
break;
}
}
return objtoinews;
}
#endregion
}
}
Step 6 : Now after completing write code in
service we have to Start our service using console application Below code show
the implementation of the host process.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
namespace WCF_NewsService
{
class Program
{
static void
Main(string[] args)
{
ServiceHost host = new ServiceHost(typeof(News_Service));
host.Open();
Console.WriteLine("Host Open Sucessfully ...");
Console.ReadLine();
}
}
}
Step 7 :
now open app.config file and
change some setting
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="Pramod"></binding>
</basicHttpBinding>
</bindings>
<behaviors>
<serviceBehaviors>
<behavior name="">
<serviceMetadata httpGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false" />
</behavior>
</serviceBehaviors>
</behaviors>
<services>
<service name="WCF_NewsService.News_Service">
<endpoint address="News_Service"
binding="basicHttpBinding"
contract="WCF_NewsService.INews_Service"
bindingConfiguration="Pramod">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
<host>
<baseAddresses>
<add baseAddress="http://localhost:8732/Design_Time_Addresses/WCF_NewsService/News_Service/" />
</baseAddresses>
</host>
</service>
</services>
</system.serviceModel>
</configuration>
Step 8 : Run your application and see message in console
screen.
Now create consumer for consume the service.
Again you have to create new application and write code in Program.cs file,
Before writing code these file we need add
service reference of NewsService Project
For adding the service reference right click
to WCF_NewsConsumer in solution explorer and go to the Add Service reference.. copy
the URL from Service project and paste it in Address location and give
appropriate name to the Service.
Here I am giving name as Proxy_TOInews for
namespace pupose and click OK
After adding the reference add namespace
using WCF_NewsConsumer.Proxy_TOInews;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using WCF_NewsConsumer.Proxy_TOInews;
namespace WCF_NewsConsumer
{
class Program
{
static void
Main(string[] args)
{
Proxy_TOInews.News_ServiceClient
proxy = new News_ServiceClient("BasicHttpBinding_INews_Service");
TOInews Tnews = new TOInews();
Console.WriteLine("Enetr News Id :");
string newsid = Console.ReadLine();
Tnews = proxy.Getnews(Convert.ToInt32(newsid));
News nws = new
News();
nws.cID = Tnews.ID;
nws.cHeader = Tnews.Header;
nws.cBody = Tnews.Body;
Console.WriteLine(" News from:" + nws.cID + "\r\r \n " + nws.cHeader + "\r\r \n " + nws.cBody + "");
Console.ReadLine();
}
public class
News
{
private int
_id;
private string
_header;
private string
_body;
public int
cID
{
get
{ return _id; }
set
{ _id = value; }
}
public string
cHeader
{
get
{ return _header; }
set
{ _header = value; }
}
public string
cBody
{
get
{ return _body; }
set
{ _body = value; }
}
}
}
}
Now run the Both application and enter new id
and hit enter key .
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