Difference between int.Parse(Console.ReadLine()) and convert.ToInt32(Console.ReadLine()) | SoloLearn: Learn to code for FREE!

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Difference between int.Parse(Console.ReadLine()) and convert.ToInt32(Console.ReadLine())

What is the difference between int.Parse(Console.ReadLine()); and Conert.ToInt32(Console.ReadLine());

c#

10/4/2016 1:34:09 PM

LordaBG

2 Answers

New Answer

+4

If you've got a string, and you expect it to always be an integer (say, if some web service is handing you an integer in string format), you'd use Int32.Parse(). If you're collecting input from a user, you'd generally use Int32.TryParse(), since it allows you more fine-grained control over the situation when the user enters in invalid input. Convert.ToInt32() takes an object as its argument, and I believe it invokes Int32.TryParse() when it finds that the object taken as the argument is a string. Convert.ToInt32() also does not throw ArgumentNullException when it's argument is null the way Int32.Parse() does. That also means that Convert.ToInt32() is probably a wee bit slower than Int32.Parse(), though in practice, unless you're doing a very large number of iterations in a loop, you'll never notice it.

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Thank you very much. So which one would you recommend me to use as generally. Thanks in advance!