Best way to check if an Item exists in Collection

[keitsi]

Currently I am using this function (LOL)

 

       Public Function ExistsInColl(ByRef col As Collection, ByVal Index As String) As Boolean
           On Error GoTo ErrNotInColl
           Dim tmp
           tmp = col(Index)
           Return True
ErrNotInColl:
           On Error GoTo 0
           Return False
       End Function

 

Errors seems to lag my .NET (at least while not running straight from .exe) and I'm finding this kinda annoying... anyone happen to know a better way? :D

 

Yea, should use Try..catch. Just ported it from VB6, which does not have a way to get around this that I know of.

 

Just to mention.. also something similar to collection should be okay. I mean something more advanced that arrays but not as heavyweight as DS / Xml / etc objects.

Edited April 4, 2004 by keitsi

[PlausiblyDamp]

If you use a hashtable rather than a collection it has two methods - ContainsValue and ContainsKey -these may be a bit easier.

[keitsi]

nice

 

Great, thanks!

[CattleRustler]

regardless of just porting over from vb6, why would you use an error trap to test a condition? Use try-catch-end try to protect yourself from unhandled errors stopping your app - use a condition test to find your item or not, regardless of the vehicle you use to store it (ie Collection, Hashtable, array, etc)