Interface Implementation Question

[snarfblam]

The IList interface provides the property Item(Index As Integer) As Object, which is read/write. Many classes that implement IList, however, have an Item property which is of a different type and read-only (System.Windows.Forms.Control.ControlCollection and System.Windows.Forms.ListView.ListViewItemCollection for example). If you cast one of these collections to IList, then you can access the property Item(Index As Integer) As Object, but otherwise this property does not show up in intellisense or the object browser.

 

I am making my own collection, which implements IList. How can I reproduce this?

 

[Edit]Also note that this also applies to other members of IList, such as Add, and Insert, not just Item.[/Edit]

[HJB417]

13.4.1 Explicit interface member implementations

[snarfblam]

Nice... only one problem though... I'm using VB.

[HJB417]

system.array class using lutz's decompiler

Private Function System.Collections.IList.Add(ByVal value As Object) As Integer Implements IList.Add
     Throw New NotSupportedException(Environment.GetResourceString("NotSupported_FixedSizeCollection"))
End Function

Private Sub System.Collections.IList.RemoveAt(ByVal index As Integer) Implements IList.RemoveAt
     Throw New NotSupportedException(Environment.GetResourceString("NotSupported_FixedSizeCollection"))
End Sub

[snarfblam]

There we go. Thanks. It seems kinda obvious but I actually tried it. The code editor marked the line as having an error, and I assumed it was because I implemented a function privately when it was actually something else.