Check if ArrayList has a certain index

Question

How do I check if a certain ArrayList index exists?

Adam Robinson · Accepted Answer · 2011-01-28 20:59:07Z

7

That depends on what you mean by "exists".

If you mean "If the ArrayList has an index that high", then you need to look at the Count:

If arrayList.Count > yourIndex Then
    ...
End If

If you mean "Does the ArrayList have a value at that index", just check for a null value:

If arrayList(yourIndex) Is Nothing Then
    ...
End If

answered Jan 28, 2011 at 20:59

Adam Robinson

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1 Comment

Can I check in a 2d array for inner values such as i(2)?

sArray = Array(Array("01probe", dbInteger), _      Array("02datum", dbDate), _      Array("03bodenart", dbText, 100, True) _      )