private static void ConvertingNonStandardEvents()
{
Console.WriteLine();
Demo.DisplayHeader("Converting Non Standard Events");
var wifiScanner = new WifiScanner();
//
// this code snippet will result in an ArgumentException, since the NetworkFoundEventHandler delegate is not convertible to the standard EventHandler<TEventArgs> type
//
//var networks = Observable.FromEventPattern<NetworkFoundEventHandler, string>(
// (h) => { wifiScanner.NetworkFound += h; },
// (h) => { wifiScanner.NetworkFound -= h; });
//networks.SubscribeConsole();
//
// when the target event has only one parameter, its easy to make it into observable
//
//IObservable<string> networks = Observable.FromEvent<NetworkFoundEventHandler, string>(
// (h) => { wifiScanner.NetworkFound += h; },
// (h) => { wifiScanner.NetworkFound -= h; });
//
// When the target event has more than one parameter, a conversion method is needed to turn them into a single object
//
IObservable<Tuple<string, int>> networks = Observable
.FromEvent<ExtendedNetworkFoundEventHandler, Tuple<String, int>>(
rxHandler =>
(ssid, strength) => rxHandler(Tuple.Create(ssid, strength)),
h => wifiScanner.ExtendedNetworkFound += h,
h => wifiScanner.ExtendedNetworkFound -= h);
networks.SubscribeConsole();
networks.SubscribeConsole();
while (true)
{
Console.WriteLine("Enter the network ssid or X to exit");
var ssid = Console.ReadLine();
if (ssid == "X")
{
break;
}
Console.WriteLine("Enter the network strength - 1 to 10");
var strength = int.Parse(Console.ReadLine());
wifiScanner.RaiseFound(ssid, strength);
}
}
private static void ConvertingNonStandardEvents()
{
Console.WriteLine();
Demo.DisplayHeader("Converting Non Standard Events");
var wifiScanner = new WifiScanner();
//
// this code snippet will result in an ArgumentException, since the NetworkFoundEventHandler delegate is not convertible to the standard EventHandler<TEventArgs> type
//
//var networks = Observable.FromEventPattern<NetworkFoundEventHandler, string>(
// h => wifiScanner.NetworkFound += h,
// h => wifiScanner.NetworkFound -= h);
//networks.SubscribeConsole();
//
// when the target event has only one parameter, its easy to make it into observable
//
//IObservable<string> networks = Observable.FromEvent<NetworkFoundEventHandler, string>(
// h => wifiScanner.NetworkFound += h,
// h => wifiScanner.NetworkFound -= h);
//
// When the target event has more than one parameter, a conversion method is needed to turn them into a single object
//
IObservable <Tuple <string, int> > networks = Observable
.FromEvent <ExtendedNetworkFoundEventHandler, Tuple <String, int> >(
rxHandler =>
(ssid, strength) => rxHandler(Tuple.Create(ssid, strength)),
h => wifiScanner.ExtendedNetworkFound += h,
h => wifiScanner.ExtendedNetworkFound -= h);
networks.SubscribeConsole();
networks.SubscribeConsole();
while (true)
{
Console.WriteLine("Enter the network ssid or X to exit");
var ssid = Console.ReadLine();
if (ssid == "X")
{
break;
}
Console.WriteLine("Enter the network strength - 1 to 10");
var strength = int.Parse(Console.ReadLine());
wifiScanner.RaiseFound(ssid, strength);
}
}
static void ConvertingEventsWithNoArguments()
{
Console.WriteLine();
Demo.DisplayHeader("Converting Events With No Arguments");
var wifiScanner = new WifiScanner();
IObservable <Unit> connected = Observable.FromEvent(
h => wifiScanner.Connected += h,
h => wifiScanner.Connected -= h);
connected.SubscribeConsole("connected");
wifiScanner.RaiseConnected();
wifiScanner.RaiseConnected();
}
static void ConvertingEventsWithNoArguments()
{
Console.WriteLine();
Demo.DisplayHeader("Converting Events With No Arguments");
var wifiScanner = new WifiScanner();
IObservable<Unit> connected = Observable.FromEvent(
h => wifiScanner.Connected += h,
h => wifiScanner.Connected -= h);
connected.SubscribeConsole("connected");
wifiScanner.RaiseConnected();
wifiScanner.RaiseConnected();
}
