How can I convert the return off my function from (string, string, string) to (int?, int?, string)

Question

I have a function in my code that returns (string, string, string)

return (commonWord.Groups[0].Value, jlpt.Groups[0].Value, wanikaniLevel.Groups[0].Value);

What I would like is for it to return (int?, int?, string)

How can I convert a string to an int?

Possible duplicate of [How can I convert String to Int?](https://stackoverflow.com/questions/1019793/how-can-i-convert-string-to-int) — kalimag, Oct 27 '19 at 09:46
What is the content of those variables? Do they even represent **numbers**? — MakePeaceGreatAgain, Oct 27 '19 at 09:56

score 1 · Accepted Answer · answered Oct 27 '19 at 09:51

You can write a method which can convert the string to Nullable<int> if it can convert:

public int? ConvertToInt(string value)
{
   return !string.IsNullOfEmpty(value) && int.TryParse(value, out int intValue) ? return (int?)intValue : null;  
}

and then can change your return tuple statement as

return (ConvertToInt(commonWord.Groups[0].Value), ConvertToInt(jlpt.Groups[0].Value), wanikaniLevel.Groups[0].Value);

How can I convert the return off my function from (string, string, string) to (int?, int?, string)

1 Answers1