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07.13.2008 at 08:13PM PDT, ID: 23561592
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9.6

If Item exists in a collection in VBA (Visual Basic for Applications) in Excel

Asked by piyushdabomb in Microsoft Excel Spreadsheet Software, Microsoft Visual Basic.Net

Tags: , ,

Hi,

Part of when I code and I add collections, I generally notice that an error 457 comes up stating that if a collection exists, you can't add it. Okay, so fine... which is why I'll end up using an error handler technique to go around the situation. With me and my novice VBA skills, I decided to create a 'Collection Exists' boolean function to test to see that if a collection exists, then tell me that it exists, else add the item to a collection. For some reason, I can't get this to work because the error still comes up after the if statement. Can anyone assess this and tell me why the collection_exists function isn't working? Its a very small piece of code.

Global My_Collection As New Collection

Public Sub Test()

Set My_Collection = Nothing
My_Collection.Add Item:="P", Key:="Apples"
If Collection_Exists("Piyush", "Piyush Aggarwala") = False Then
     My_Collection.Add Item:="P2", Key:="Apples"
Else
    Debug.Print "Collection Exists"
End If
End Sub

Public Function Collection_Exists(str As String, str2 As Variant) As Boolean
     If IsError(My_Collection.add(item:=str, key:=str2) Then Collection_Exists = True
End Function

I rarely use functions ... but when I do...I land into problems. Start Free Trial
[+][-]07.13.2008 at 08:50PM PDT, ID: 21995541

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[+][-]07.13.2008 at 09:06PM PDT, ID: 21995584

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[+][-]07.13.2008 at 10:42PM PDT, ID: 21995917

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[+][-]07.14.2008 at 02:46AM PDT, ID: 21996739

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[+][-]07.14.2008 at 04:37AM PDT, ID: 21997136

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[+][-]07.14.2008 at 05:05AM PDT, ID: 21997273

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[+][-]07.14.2008 at 11:05AM PDT, ID: 22000450

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About this solution

Zones: Microsoft Excel Spreadsheet Software, Microsoft Visual Basic.Net
Tags: Microsoft, Excel, 2002
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Solution Provided By: zorvek
Participating Experts: 4
Solution Grade: A
 
 
 
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