You have to use a Generic Method: Function Count(Of T)(Col As PersonCollection(Of T)) As Integer
(or a 'non-generic' method in a generic class (Of T)). I believe this sort of function can use type inference in 2005 sometimes, so you don't need to explicitly say: Count(Of Employee)(Employees) but just Count(Employees) when Employees is PersonCollection(Of Employee) or EmployeeCollection, but I haven't checked that. For each distinct T, X(Of T) is a separate, unrelated type. To simplify routines like this that /don't/ need the generic type, have the generic type implement a non-generic interface. Regards, Mark Hurd, B.Sc.(Ma.)(Hons.) On 21/8/07, Jeff Paulsen <[EMAIL PROTECTED]> wrote: > For "MyCollection", please read "PersonCollection". Thank you. > > > -----Original Message----- > > From: Discussion of advanced .NET topics. [mailto:ADVANCED- > > [EMAIL PROTECTED] On Behalf Of Jeff Paulsen > > Sent: Monday, August 20, 2007 5:17 PM > > To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM > > Subject: [ADVANCED-DOTNET] Generics as parameters? syntax question > > > > I have classes like this: > > > > Class Customer > > Inherits Person > > Class Employee > > Inherits Person > > > > Class PersonCollection(Of T as {Person, New}) > > > > Class EmployeeCollection > > Inherits MyCollection(of Employee) > > Class CustomerCollection > > Inherits MyCollection(of Customer) > > > > Now I want to have a function that can operate on any MyCollection. > > How can > > I declare that? > > > > Thanks in advance, > > > > Jeff Paulsen =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
