Proper way to dispose a new Form

Question

So in my apps, I tend to create new instances of forms on the fly, then use Form.Show() to display them (non modal).

Answer 1

You could implement somekind of forms manager that will subscribe to the OnFormClosedEvent for each form it shows, it can then dispose them... something like:

public class FormManager
{
    public T ShowForm()
        where T : Form, new()
    {
        var t = new T();
        t.OnFormClosing += DisposeForm;
        return t;
    }

    void DisposeForm(object sender, FormClosedEventArgs args)
    {
        ((Form)sender).Dispose();
    }
}

You could even go so far as to implement IDisposable and dispose all non-disposed forms when the manager is disposed :)