-- From this service contract ... ----------------------------------------------


[ServiceContract]
interface IFoo
{
	[OperationContract]
	BazType BarOper (...);
}


-- A client like this is created (interface types too, which are simple) -------



public class FooClient : ClientBase<IFoo>, IFoo {

public .ctor()
public .ctor(string)
public .ctor(Binding,EndpointAddress)
public .ctor(string,EndpointAddress)
public .ctor(string,string)
public void BarOperAsync(...)
public void BarOperAsync(..., object userState)
{
	if (onBeginBarOperDelegate == null)
		onBeginBarOperDelegate = new BeginOperationDelegate (OnBeginBarOper)
	if (onEndBarOperDelegate == null)
		onEndBarOperDelegate = new EndOperationDelegate (OnEndBarOper)
	if (onBarOperCompletedDelegate == null)
		onBarOperCompletedDelegate = new SendOrPostCallback (OnBarOperCompleted);
	InvokeAsync (onBeginBarOperDelegate, new object [] {arg1, arg2, ...}, onEndBarOperDelegate, onBarOperCompletedDelegate, userState);
}
protected IFoo CreateChannel() [ml]
IAsyncResult IFoo.BeginBarOper(..., AsyncCallback, object)
{
	return base.BeginInvoke ("BarOper", new object [] {arg1, arg2, ...}, callback, state);
}
BazType IFoo.EndBarOper(IAsyncResult , out ...)
{
	object [] ret = EndInvoke ("BarOper", result);
	/*optionally*/ outArg1 = ret [1]; outArg2 = ret [2] ...
	return (BazType) ret [0];
}
private void OnBarOperCompleted(object state)
{
	if (BarOperCompleted != null) {
		var args = (InvokeAsyncCompletedEventArgs) state;
		BarOperCompleted (new BarOperCompletedEventArgs (args.Results, args.Error, args.Cancelled, args.UserState));
	}
}
private IAsyncResult OnBeginBarOper(object [] inValues, AsyncCallback, object)
{
	var arg1 = inValues [0]; var arg2 = inValues [1]; ...
	return BeginBarOper (arg1, arg2, ..., callback, state);
}
private object [] OnEndBarOper(IAsyncResult)
{
	xxx outarg1;
	yyy outarg2;
	...
	var ret = EndBarOper (result, out outarg1, out outarg2, ...);
	return new object [] {ret, outarg1, outarg2...};
}
public event EventHandler<BarOperCompletedEventArgs> BarOperCompleted
private SendOrPostCallback onBarOperCompletedDelegate
private ClientBase<IFoo>.BeginOperationDelegate onBeginBarOperDelegate
private ClientBase<IFoo>.EndOperationDelegate onEndBarOperDelegate

public class BarOperCompletedEventArgs : AsyncCompletedEventArgs
{
	public BarOperCompletedEventArgs (object [] results, Exception ex, bool cancelled, object userState)
	{
		this.results = results;
	}
	object [] results;
	public BazType Result { get { (BazType) results [0]; } }
}

}