Demonstrates the use of IDisposable

DemonstratingIDisposable.cs

Console.WriteLine("Creating 50 NotDisposable objects which will" +
    " allocate 500mb of memory and will not clean at garbage collection.");
Console.ReadLine();

if(true)
{
    NotDisposableContainer container = new NotDisposableContainer();
    container.ND = new List<NotDisposable>();
    for (int i = 0; i < 50; i++)
        container.ND.Add(new NotDisposable());

    Console.ReadLine();
}

Console.WriteLine("Creating 50 Disposable objects which will" +
    " allocate 500mb of memory and will clean at garbage collection.");
Console.ReadLine();


if (true)
{
    for (int i = 0; i < 50; i++)
    {
        using (Disposable d = new Disposable())
        {

        }
    }

}

Console.WriteLine("Press enter to cleanup.");
Console.ReadLine();
GC.Collect();
Console.ReadLine();

class NotDisposableContainer
{
    public List<NotDisposable> ND;
}

class Disposable : IDisposable
{
    MemoryStream _ms;
    byte[] buffer = new byte[10_000_000]; // 10mb
    public Disposable()
    {
        for (int i = 0; i < 10_000_000; i++)
        {
            buffer[i] = (byte)i;
        }
        _ms = new MemoryStream(buffer);
    }

    public void Dispose()
    {
        _ms.Dispose();
        GC.SuppressFinalize(this);
    }

    ~Disposable()
    {
        Dispose();
    }
}

class NotDisposable
{
    MemoryStream _ms;
    byte[] buffer = new byte[10_000_000]; // 10mb
    public NotDisposable()
    {
        for (int i = 0; i < 10_000_000; i++)
        {
            buffer[i] = (byte)i;
        }
        _ms = new MemoryStream(buffer);
    }
}