C # Multithreading Singleton (single-piece) mode template _ Practical Tips

Copy Code code as follows:

private static volatile T _instance = null;
private static Object Objlock = new Object ();
Private T ()
{
}
public static T Instance
{
Get
{
if (_instance = null)
{
Lock (Objlock)
{
if (_instance = null)
{
_instance = new T ();
}
}
}
return _instance;
}
}

If you want to refresh the current instance if necessary, you can write this:

Copy Code code as follows:

public static void Refreshinstance ()
{
_instance = new T ();
}