CODESNIP - Creating C# like indexers in VB.NET
Well, kind of :) I have a collection that I want to access in C# with an indexer, the only problem is that the collection is written in VB.NET as part of a library which I need to consume and would be foolhardy to try and rewrite in C#.
It’s just a mixture of attributes and keywords - but gets me from having to call
MyCollection.get_Item("key");
to
MyCollection["key"];
Just a stylistic approach on my end to keep the readability of my C# consumer as high as possible. This is basically what I used:
Imports System.Reflection
...
<DefaultMember("Item")> _
Public Class MyCollection
Inherits System.Collections.CollectionBase
Public Sub Add(ByVal NewObj As MyClass)
List.Add(NewObj)
End Sub
...
Default Public Overloads ReadOnly Property Item(ByVal Index As Int32) _
As MyClass
Get
Return(CType(List.Item(Index), MyClass)
End Get
End Property
Default Public Overloads ReadOnly Property Item(ByVal Key As String) _
As MyClass
Get
Return(GetByKey(Key))
End Get
End Property
...
End Class
I don’t know if the Default on the properties are required, but this worked for me. So I’m not messing with it :) Hope this can help someone else out there.
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