Arithmetic operation resulted in an overflow. (Adding integers)

Question

I can\'t understand this error:

In this call to method SetVolume, Volume = 2055786000 and size = 93552000. Volume is an Integer pr

Answer 1

2055786000 + 93552000 = 2149338000, which is greater than 2^31. So if you're using signed integers coded on 4 bytes, the result of the operation doesn't fit and you get an overflow exception.