How to get a KEY from a sorted list (not a VALUE) ??

microsoft.public.dotnet.languages.vb

15 Sep 2006 4:23 PM

pamelafluente

Hi,

I have a SortedList "MySortedList". I want to get the KEY, not the
VALUE. How can i do that ?? Possibly I want a O(1) operation:

If MySortedList.ContainsKey(SomeObject) Then

SomeObject_ContainedKey = MySortedList.??what????(SomeObject)

End If

PS.
Please note that SomeObject and SomeObject_ContainedKey (the one I want
to get) are *not* the same because clearly I am assuming ContainsKey
return TRUE based on some comparer.

-P

18 Sep 2006 8:03 PM

Claes Bergefall

Dim index As Integer = MySortedList.IndexOfKey(SomeObject)
If index >= 0 Then
SomeObject_ContainedKey = MySortedList.GetKey(index)
End If

/claes

<pamelaflue***@libero.it> wrote in message
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news:1158337387.625736.175710@d34g2000cwd.googlegroups.com...
> Hi,
>
> I have a SortedList "MySortedList". I want to get the KEY, not the
> VALUE. How can i do that ?? Possibly I want a O(1) operation:
>
>
> If MySortedList.ContainsKey(SomeObject) Then
>
> SomeObject_ContainedKey = MySortedList.??what????(SomeObject)
>
> End If
>
>
> PS.
> Please note that SomeObject and SomeObject_ContainedKey (the one I want
> to get) are *not* the same because clearly I am assuming ContainsKey
> return TRUE based on some comparer.
>
>
> -P
>