private static void BasicLazyLoading()
{
// Defining database
// For parameter-less constructor
// Lazy<Database> database = new Lazy<Database>();
// For parameter-based constructor
Lazy<Database> database = new Lazy<Database>(() =>
{
Database internalObject = new Database("MyNewName");
return internalObject;
});
Console.WriteLine("Defined database object. Is database object created?");
// Check if database object has been initialized
if (database.IsValueCreated)
Console.WriteLine("Database is initialized now!");
else
Console.WriteLine("Database is not initialized yet!");
// Will throw an exception.. as it does not have parameter-less constructor
Console.WriteLine("Database: Name =" + database.Value.Name);
// Check if database object has been initialized
if (database.IsValueCreated)
Console.WriteLine("Database is initialized now!");
}
static void Main(string[] args)
{
Lazy<Database> database = new Lazy<Database>(() =>
{
Database internalObject = new Database("MyNewName");
return internalObject;
}, System.Threading.LazyThreadSafetyMode.PublicationOnly);
ThreadPool.QueueUserWorkItem(new WaitCallback(ProcessDatabase), database);
ThreadPool.QueueUserWorkItem(new WaitCallback(ProcessDatabase), database);
Console.ReadKey();
}