Creating Services with the WCF - Hosting a service (Page 4 of 4 )
Next, add a new console application to the solution. This will be the host application. You'll instantiate a ServiceHost instance for the service type and configure a single endpoint.
- Go to the Solution Explorer and add a new Console Application project to the solution. Name the new projectHost.
Add a reference to theSystem.ServiceModelassembly, and add the followingusingstatement to Program.cs:
using System.ServiceModel;
- You will be writing code to host theHelloIndigoServicetype. Before you can do this, you must add a reference to theHelloIndigoproject.
- Create aServiceHostinstance and endpoint for the service. Open Program.cs in the code window and modify theMain()entry point, adding the code shown in Example 1-1. This code initializes aServiceHostinstance specifying the service type and a base address where relative service endpoints can be located. It also adds a single relative endpoint for the service. In this case, a base address is provided for HTTP protocol, and the relative endpoint uses one of the standard bindings,BasicHttpBinding, based on HTTP protocol.
- Compile and run the host to verify that it works. From Solution Explorer, right-click on theHostproject node and select "Set as Startup Project." Run the project (F5), and you should see console output similar to that shown in Figure 1-17.
- Stop debugging and return to Visual Studio.
Example 1-1. Code to programmatically initialize the ServiceHost
static void Main(string[] args)
{
using (ServiceHost host = new ServiceHost(typeof(HelloIndigo.HelloIndigoService),
new Uri(http://localhost:8000/HelloIndigo)))
{
host.AddServiceEndpoint(typeof(HelloIndigo.IHelloIndigoService),
new BasicHttpBinding(), "HelloIndigoService");
host.Open();
Console.WriteLine("Press <ENTER> to terminate the service host");
Console.ReadLine();
}
}
Figure 1-17. Console output for the host application
You now have a host application for the service. When it is running, clients will be able to communicate with the service. The next step is to create a client application.
Please check back next week for the continuation of this article.
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 This article is excerpted from chapter 1 of the book Learning WCF A Hands-on Guide, written by Michele Leroux Bustamante (O'Reilly, 2007; ISBN: 0596101627). Check it out today at your favorite bookstore. Buy this book now.
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