how to create channel in wcf?

BasicHttpBinding myBinding = new BasicHttpBinding();

EndpointAddress myEndpoint = new EndpointAddress("http://localhost:50498/Service1.svc");

ChannelFactory<IService1> myChannelFactory = new ChannelFactory<IService1>(myBinding, myEndpoint);

IService1 instance = myChannelFactory.CreateChannel();

string st=instance.GetData(67868);