Cannot access a disposed object?

Question

I have a countdown Timer form - on the first form the user will enter the countdown time - warning times, end message, etc. There are also two Radio buttons (Max/Min) and d

Answer 1

What you can do is add a following check before calling .Show method:

if(_Max == null || _Max.IsDisposed)
    _Max = new MaxForm();       

_Max.Show();

and similarly for _Min form