public static Logger2 GetInstance()
{
if (instance == null)
{
instance = new Logger2();
}
return(instance);
}
static void Main(string[] args)
{
// Singleton with Static field implementation
// Logger1 a = new Logger1(); - cannot create a new Logger
Logger1.GetInstance.LogMessage("Singleton with Static field.");
// GetInstance() method returns the only single Logger2 instance
Logger2.GetInstance().LogMessage("With GetInstance() method.");
// Simple Thread safe implementation
Logger3.GetInstance.LogMessage("Thread-safe implementation.");
// Thread safety with double check
Logger4.GetInstance.LogMessage("Thread-safety with double Check.");
// Thread-safety without lock
Logger5.GetInstance.LogMessage("Thread-safety without lock.");
// Thread-safety without lock - using propertiy with lambda
Logger5b.GetInstance.LogMessage("Thread-safety without lock - using propertiy with lambda");
// Thread-safety without lock - with auto property
Logger5c.GetInstance.LogMessage("Thread-safety without lock - with auto property");
// Lazy instantiation with Lazy<T>
Logger6.GetInstance.LogMessage("Lazy instantiation with Lazy<T> ");
// Lazy instantiation with Nested classes
Logger7.GetInstance.LogMessage("Lazy instantiation with Nested classes.");
/***********************************************************************************/
//GenericLogger
Console.WriteLine("\r\n\r\nGeneric Logger:");
FileLogger fileLoggerInstance = GenericLogger <FileLogger> .GetInstance();
fileLoggerInstance.Log("Log a file with FileLogger.");
EventLogger eventLoggerInstance = GenericLogger <EventLogger> .GetInstance();
eventLoggerInstance.Log("Log an event with EventLogger.");
/***********************************************************************************/
Console.WriteLine("\r\n\r\nBadAssSingleton:");
BadAssSingleton badAssSingleton = BadAssSingleton.OnlyInstance;
badAssSingleton.LogMessage("Log Message.");
badAssSingleton.Dispose();
Console.Read();
}