Index was outside the bounds of the array in c# : IndexOutOfRange

Question

How do you know that `filesIndex` was not outside the bounds of the array? There's nothing in your code that would ensure that structurally. Add a check before you use the variable and see if it fires. — Tumbleweed53, Dec 03 '20 at 15:26
@Tumbleweed53 Yes it triggers the fire then we see the issue as mentioned. — May M, Dec 03 '20 at 15:43

score 0 · Accepted Answer · answered Dec 03 '20 at 15:27

0

Well you initialize your array fileData = new string[2] with a size of 2. For the 3rd file that matches your condition, fileIndex will be 2 and thus outside the array's bounds.

As you don't know how may files will match on beforehand, use a List<string> instead.

answered Dec 03 '20 at 15:27

CodeCaster

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but the issue is in this line int filesIndex = 0; within the IF loop when i replace 0 with filesIndex that is causing the error. Can you share me the block with the code updated? – May M Dec 03 '20 at 15:39
No, the exception occurs at `fileData[filesIndex]`. Make fileData a `List` instead, and `.Add()` to it. – CodeCaster Dec 03 '20 at 15:45
You mean `var fileData = new List – CodeCaster Dec 03 '20 at 16:08
Thank you buddy. I appreciate you're inputs. – May M Dec 03 '20 at 17:38

Index was outside the bounds of the array in c# : IndexOutOfRange

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