static void Main(string[] args)
{
Singleton singleton1 = Singleton.Instance;
singleton1.PrintDetails("Message 1");
Singleton singleton2 = Singleton.Instance;
singleton1.PrintDetails("Message 2");
Console.ReadLine();
}
private static void CreateStudent()
{
System.Threading.Thread.Sleep(2000);
Singleton fromStudent = Singleton.GetInstance;
fromStudent.PrintDetails("From Student");
}
static void Main(string[] args)
{
Console.WriteLine("Enter one of the following number to explore the design pattern");
Console.WriteLine("1- Singleton Pattern");
Console.WriteLine("2- Singleton Thread Safety with lock Pattern");
string value = Console.ReadLine();
switch (value)
{
case "1":
Singleton objectA = Singleton.GetInstance;
objectA.PrintDetails("This is from Object A");
Singleton objectB = Singleton.GetInstance;
objectA.PrintDetails("This is from Object B");
//Uncomment following code if we want to test why we need to seal our class.
//Singleton.DerivedSingleton derivedObj = new Singleton.DerivedSingleton();
//derivedObj.PrintDetails("From Derived");
break;
case "2":
Parallel.Invoke(
() => SingletonHelper.PrintObjectA1Details(),
() => SingletonHelper.PrintObjectB1Details()
);
break;
case "3":
SingletonEager objectAE = SingletonEager.GetInstance;
objectAE.PrintDetails("This is from eager loading, obeject AE");
SingletonEager objectBE = SingletonEager.GetInstance;
objectAE.PrintDetails("This is from eager loading, obeject BE");
break;
case "D":
break;
}
Console.Read();
}
private static void PrintS1()
{
Singleton s1 = Singleton.GetInsance;
s1.PrintDetails("This is first message");
}
private static void PrintS2()
{
Singleton s2 = Singleton.GetInsance;
s2.PrintDetails("This is second message");
}
private static void GetSingletonInstance_2()
{
Singleton GetSingletonInstance_2 = Singleton.GetSingletonInstance;
GetSingletonInstance_2.PrintDetails("PRINT : GetSingletonInstance_2");
}
private static void GetSingletonInstance_1()
{
Singleton GetSingletonInstance_1 = Singleton.GetSingletonInstance;
GetSingletonInstance_1.PrintDetails("PRINT : GetSingletonInstance_1");
}
private static void PrintEmployeeDetails()
{
Singleton singletonEmp = Singleton.GetInstance;
singletonEmp.PrintDetails("This is the first message for employees...");
}
private static void PrintContractorDetails()
{
Singleton singletonContract = Singleton.GetInstance;
singletonContract.PrintDetails("Sending a message for Contractors ...");
}
private static void CreateEmployee()
{
Singleton fromEmployee = Singleton.GetInstance;
fromEmployee.PrintDetails("From Employee");
}
