Question

I am trying to create a method that looks like the following when used:

Dialog (var d = new MyDialog())
{
    d.DoSomethingToAVisibleDialogThatAppearedInTheDialog(); //Call
}

Like “using”, it would handle the destructor, but I want to add more stuff to Dialog, which would handle my IDialog interface.

Answer 1

You could created a class like the following:

class DisposableWrapper<T> : where T : IDisposable {
    T _wrapped;
    private bool _disposed;
    public DisposableWrapper(T wrapped) {
        _wrapped = wrapped;
    }
    public T Item {
        get { return _wrapped; }
    }
    public ~DisposableWrapper()
    {
        Dispose(false);
        GC.SuppressFinalize(this);
    }
    public void Dispose() {
        Dispose(true);
    }
    protected virtual void Dispose(bool disposing)
    {
        if (_disposed) return;
        if (disposing) {
            _disposed = true;             
            ((IDisposable)_wrapped).Dispose();
            // do extra stuff
        }
    }
}

And then use it like so:

using (var wrapper = new DisposableWrapper(new Dialog()) {
    Dialog d = wrapper.Item;
    // do stuff
}