I want to define some properties on a class using the [Indexable()] attribute in order to use the class with the i4o library (http://www.codeplex.com/i4o) but when I try and compile the code Visual Studio says it cannot find the Namespace for Indexable.
Is this part of the CLR and which namespace/library do I need to get this to compile?
[Indexable()] isn’t an attribute included in the .NET Framework. It was removed from i4o in favor of other approaches. See this blog post for details on how to use it.