weak references : GC « Development « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Development
3. GC

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Security.Cryptography;

public class MainClass
{
    public static void Main()
    {
        object target = new object();
        WeakReference wr = new WeakReference(target);
        Console.WriteLine("IsAlive: {0}", wr.IsAlive);
        GC.Collect();
        Console.WriteLine("IsAlive: {0}", wr.IsAlive);
    }
}

IsAlive: True
IsAlive: False