Check if the form has been opened?

Question

C++ / C#

Good afternoon,
in *.dll I open the form through Form.ShowDialog();
How can I find out if *.dll itself is closed (form) or not?
if it is still open, then I wanted to close it (the form) via Form.Dispose();

Answer 1

stackoverflow.com/questions/3861602/how-to-check-i...