asp.net - passing generic lists

Question

I have a utility class that takes a generic list as a parameter.

Code looks like:

Function DoStuff(collection as Object, elt as Object)
   ...
   collection.Add(elt)
   ...
End Function

This is called with:

DoStuff( List(Of Foo), new Foo() )
DoStuff( List(Of Bar), new Bar() )

There are about a dozen different types.

Currently, passing as Object results in a Late bound resolution warning, although it runs fine.

I've tried different ways to pass in collection and elt (Foo and Bar both extend a base class) but can't seem to figure out the "proper" way to do it.

Ideas?

Answer 1

I think you're looking for something like this.

Public Sub DoStuff(Of T)(collection As List(Of T), elt As T)
    ...
    collection.Add(elt)
    ...
End Function