dear friends/sir
i want to open windows form c# . after button click
in which i have only and only one form1 and button1
i have done this. now i want to button act like
if first time i pressed it it should show form1
in second click form 1 should be close and new form1 display.
my mean is to i don't want dublicate form.
i want second time when i pressed button it should load_form1()
currently what happening when i'm pressing button more then 1time it creating
many instance of that form