public static void Main(string[] args)
{
if (Enum.IsDefined(typeof(OutputDeviceType), AppSettings.Settings.OutputDevice))
{
OutputDeviceType type;
Enum.TryParse <OutputDeviceType>(AppSettings.Settings.OutputDevice, out type);
Writer writer = WriterFactory.Create(type);
IHelloWriter hwriter = IHelloWorldWriterFactory.Create(writer);
hwriter.Write();
}
else
{
throw new ApplicationException(string.Format("Unable to Output to {0}.", AppSettings.Settings.OutputDevice));
}
}
static void Main(string[] args)
{
var serviceProvider = new ServiceCollection()
.AddSingleton <IWriter>(w =>
{
var config = new ConfigurationBuilder()
.AddJsonFile("appsettings.json", true, true)
.Build();
var factory = new WriterFactory();
return(factory.GetWriter(config["writer"]));
})
.AddSingleton <IApi, Api>()
.BuildServiceProvider();
var api = serviceProvider.GetService <IApi>();
api.Write();
}