编程实现WCF客户端调用

using System;
using System.ServiceModel;
using Wcf.Contract;

namespace Wcf.Host
{
class MainClass
{
public static void Main()
{
ChannelFactory<IOperation> channelFactory = new ChannelFactory<IOperation> (
new BasicHttpBinding (), "http://localhost:8081/operation");
try
{
var proxy = channelFactory.CreateChannel ();
var result = proxy.Add (3, 5);
Console.WriteLine (result);
}
catch(Exception ex) {
//Console.BackgroundColor = ConsoleColor.Red;
Console.WriteLine (ex.Message);
//Console.ResetColor ();
}
Console.WriteLine ("press any key to Continue...");
Console.ReadKey ();
}
}