Possible to monitor changes in array (with event)?

  • Thread starter Thread starter HKSHK
  • Start date Start date
H

HKSHK

Hi folks,

I hope that anyone can give me a tip about this problem.

I need to monitor the content of an array (boolean variables). The best
thing would be if I was able to create an event that's being triggered
when one of the variables changes (ideally giving the index of that
changed variable).

I thought about using a timer, but the problem is that it's not very
reliable (a variable might have changed right after it was checked), so
what can I do?

Thanks in advance for your help.

Best Regards,

HKSHK
 
HKSHK said:
I need to monitor the content of an array (boolean variables). The best
thing would be if I was able to create an event that's being triggered
when one of the variables changes (ideally giving the index of that
changed variable).
Click to expand...

Wrap your array in a class derived from CollectionBase and override its
OnSet routine to trap each change.

Class BoolArray
Public Event ItemChanged( ByVal index as Integer, ...

Protected Overrides OnSet( _
ByVal Index as Integer _
, ByVal oldValue as Object _
, ByVal newValue as Object _
)
If Not [Object].Equals( oldValue, newValue ) Then
RaiseEvent ItemSet( index, ...
End If
End Sub

End Class

HTH,
Phill W.
 
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