C# - WCF On Windows 7 Not Working

I create wcf for server side printing scenario... I host wcf dll on console application. Below is my code:

class Program
{
static void Main(string[] args)
{
using (ServiceHost host = new ServiceHost(typeof(PrintBarcode)))
{
host.Open();
Console.WriteLine("The service is ready...");
Console.WriteLine("Press <Enter> to stop the service.");
Console.ReadLine();
host.Close();
}
}
}

And this is my app.config:..............................