i want fee receipt code for desktop software

Question

i want fee receipt code i Check April if last window show false vaue get 0 in datagridview if True show fee who get second picture fee vaule (3rd picture want code how do this)

 

 

 

I want fee receipt code i Check April if last window show false vaue get 0 in datagridview if True show fee who get  second picture fee vaule