NP61 Any advantage

Question

Hi Guys

NP61 Any advantage

int volInt = Int32.Parse(volString);

int volInt = Convert.ToInt32(volString);

In a program these two codes are producing similar output. I wish to know whether

these codes are same or is there any advantage one over other when using it. Anyone knows please explain.

Thank you

Maha · Answer

Thank you Alan for the explanation.

Alan · Answer

Convert.ToInt32() does in fact call Int32.Parse() 'under the hood' if the string is non-null. If the string is null Convert.ToInt32() returns zero whereas Int32.Parse() throws an exception. So if you're certain that the string won't be null use Int32.Parse() - or simply int.Parse() - to save the overhead of an extra function call. Otherwise use Convert.ToInt32() if a return value of zero is acceptable in these circumstances.