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Hello,

I am trying to convert a string array to int array using the following code:
MIDL
stringArray[i, 0] = (Reader["Test"].ToString());
stringArray[i, 1] = (Reader["Test1"].ToString());
stringArray[i, 2] = (Reader["Test2"].ToString());

int toInt0 = Int32.Parse(stringArray[i, 0]);
int toInt1 = Int32.Parse(stringArray[i, 1]);
int toInt2 = Int32.Parse(stringArray[i, 2]);

intArray[i, 0] = toInt0;
intArray[i, 1] = toInt1;
intArray[i, 2] = toInt2;


I get the following error:

System.FormatException: Input string was not in a correct format.
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.Int32.Parse(String s)
at Book.button1.test() in C:\Users\Dave\Documents\Visual Studio 2010\Projects\Book\Form1.cs:line 603 Exception caught.

What should i fix ?

Thanks,
Dave
Posted

1 solution

This is expected; your code is correct.
This what it is: string in not in correct format.

If the argument of Parse is "-33321", it will return correspondent integer value, if it is "blah-blah", what else could you expect? Don't use TryParse, keep it as it is now in your code, use debugger and find where "blah-blah" gets in your string array.

If you still need help, ask a follow-up question, but show you data and the code writing your string, not converting into integers.

Important! Please don't post it as a Question (a common mistake), use "Improve Answer", in other cases, use "Add comment".

—SA
   
Comments
Espen Harlinn 20-Feb-11 16:32pm
   
My 5 - "how OP could expect to turn "Test", "Test1" and "Test2" into integers baffles me" - oops - a bit of too fast, and inaccurate, reading on my part, sorry :)
Sergey Alexandrovich Kryukov 20-Feb-11 16:48pm
   
Exactly (actually, we don't know the string, but anyway...).
Thank you, Espen,
--SA
Nish Nishant 20-Feb-11 17:32pm
   
Espen, he's not converting "Test" but Reader["Test"].
Sergey Alexandrovich Kryukov 20-Feb-11 17:36pm
   
Ah, yes! That's correct, but probably does not make the string better :-)
--SA
Espen Harlinn 20-Feb-11 17:52pm
   
Probably a good thing I didn't answer this one :)
Sergey Alexandrovich Kryukov 20-Feb-11 18:05pm
   
Sometimes I simply loose patience while reading such stuff, that's why such things happen; usually not a big problem, all mistakes can be fixed...
Espen Harlinn 20-Feb-11 17:51pm
   
oops, thanks Nishant :)
Yusuf 20-Feb-11 17:10pm
   
Good Answer.
Sergey Alexandrovich Kryukov 20-Feb-11 17:37pm
   
Thank you, Yusuf.
--SA
Nish Nishant 20-Feb-11 17:32pm
   
Good response. Take a 5 vote.
Sergey Alexandrovich Kryukov 20-Feb-11 17:37pm
   
Thank you, Nishant,
--SA

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