namespace MemLeakProfileDemo
{
    public partial class Form1 : Form
    {
        private Fool fool;
        private FoolBrother brother;
        public Form1()
        {
            InitializeComponent();
            fool = new Fool();
            brother = new FoolBrother();
            //引用fool
            brother.YoungFool = fool;
        }
        private void btnAlloc_Click(object sender, EventArgs e)
        {
            var i = 10;
            //AllocalHugeMem 会申请10M的内存
            fool.AllocalHugeMem();
        }
        private void btnWrongRelease_Click(object sender, EventArgs e)
        {
            //虽然fool 指向null,但 brother保留了对fool的引用,GC无效果.内存泄露
            fool = null;
            GCRelease();
        }
        private void btnRightRelease_Click(object sender, EventArgs e)
        {
            //消除 brother 对fool的引用,GC效果明显
            fool = null;
            brother = null;
            GCRelease();
        }
        private void GCRelease()
        {
            GC.Collect();
            GC.WaitForPendingFinalizers();
            GC.Collect();
        }
    }
    public class Fool
    {
        private IList<byte[]> list = new List<byte[]>();
        public void AllocalHugeMem()
        {
            var buffer = new byte[10 * 1024 * 1024];
            for (int i = 0; i < buffer.Length; i++)
            {
                buffer[i] = 1;
            }
            list.Add(buffer);
        }
    }
    public class FoolBrother
    {
        public Fool YoungFool
        {
            get;
            set;
        }
    }
}

            //虽然fool 指向null,但 brother保留了对fool的引用,GC无效果.内存泄露
            fool = null;
            GCRelease();