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Using UBound on empty array

Posted on 2004-10-13
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Last Modified: 2007-12-19
I am doing something similar to the following:

Dim myArray()
...
'Some code that may ReDim myArray to some new size
...
If UBound(myArray) > 0 Then
...


If I make it to the line that checks UBound and nothing has yet been added to the array, I get the following error:

Microsoft VBScript runtime error '800a0009'

Subscript out of range: 'UBound'

How can I find out the size of my array when there is a possibility that the array may have no values?
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Question by:steveo225
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5 Comments
 
LVL 15

Expert Comment

by:Colosseo
ID: 12297798
Hi

you could try this as your first line

Dim myArray(0)

This should stop the error as the array has been dimensionalised (spelling :) )

Cheers

Scott
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LVL 19

Accepted Solution

by:
peh803 earned 50 total points
ID: 12298056
Before you do ubound(myArray), do this:

if isArray(myArray) then
  if ubound(myArray)>0 then
     ''do whatever you want
  end if
else
  '' myArray isn't an array!
end if
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LVL 4

Author Comment

by:steveo225
ID: 12298322
Scott, if I start the array at 0, when I try to ReDim it, I get this error:

Microsoft VBScript runtime error '800a000a'

This array is fixed or temporarily locked
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LVL 4

Author Comment

by:steveo225
ID: 12298424
IsArray worked though, thanks peh
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LVL 19

Expert Comment

by:peh803
ID: 12298665
glad to help!

peh803
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