Question

How can I convert/dump an arraylist into a list? I’m using arraylist because I’m using the ASP.NET profiles feature and it looked like a pain to store List in profiles.

Note:
The other option would be to wrap the List into an own class and do away with ArrayList.

http://www.ipreferjim.com/site/2009/04/storing-generics-in-asp-net-profile-object/

Answer 1

The easiest way to convert an ArrayList full of objects of type T would be this (assuming you’re using .NET 3.5 or greater):

List<T> list = arrayList.Cast<T>().ToList();

If you’re using 3.0 or earlier, you’ll have to loop yourself:

List<T> list = new List<T>(arrayList.Count);

foreach(T item in arrayList) list.Add(item);