Does Index of Array Exist

c# arrays indexing
splatto picture splatto · Apr 27, 2009 · Viewed 147.8k times · Source

I've inherited some code at work that has a really bad smell. I'm hoping to find the most painless solution possible.

Is there a way to check if some arbitrary number is a valid element in an array?

Example - I need to check if array[25] exists.

Preferably I would prefer to do this without doing a foreach() through the array to found the rows.

Is there any way to do this, or am I stuck with foreach loop?

Answer

Eoin Campbell picture Eoin Campbell · Apr 27, 2009

Test the length

int index = 25;
if(index < array.Length)
{
    //it exists
}

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