Collection of objects of multiple types which implement an interface.

Hi,

I have a problem Im hoping someone can help me with.

Ive a control which extends the asp.net Calendar Control allowing me to display lists of events on the calendar. Currently its datasource is a Datatable.

I have several classes which represent different types of events. The base Class is called CalendarEvent and is exntended by MeetingEvent, ConferenceEvent, InterviewEvent etc.

I have an interface ICalendarEvent which has one method, getDataTable, which return a datatable in the right format for the Extended Calendar control. My Event classes all implement this interface.

I want to create a collection of objects which implement ICalendarEvent. This List should be able to contain objects of type CalendarEvent, MeetingEvent etc.

Is this possible?

Thanks,
Conor

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Conor18y ago
wonderful!
Alan18y ago
If you're using .NET 2.0 or later, just use a List. This works in much the same way as an ArrayList except that all the elements must be of types which implement ICalendarEvent.

Here's a link to the online docs for the generic List class if you're not familiar with it:

http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx