Can you advise me a simple way to get functionality somewhat like entitycollectionbase?

I want to create a class of entities and then define a class for collecting them as you do with the generation from a table, but without the table.

I looked at entitycollectionbase, but it looked too complex to model.

Would ArrayList work for Web datagrid binding and it has the add method, remove, etc. That seems close, but is there a better path to go down?

Thanks

Please have a look at the article I wrote on ITypedList: http://weblogs.asp.net/fbouma/articles/115837.aspx

it contains example code based on the arraylist which will give you rich databinding features. For the rest, indeed just use an arraylist, it's sufficient for what you want to do I think.