How to truncate a list?

Question

What's the easiest way to remove every element after and including the nth element in a System.Collections.Generic.List<T>?

Answer 1

If you can use RemoveRange method, simply do:

list.RemoveRange(index, count); 

Where index is where to start from and count is how much to remove. So to remove everything from a certain index to the end, the code will be:

list.RemoveRange(index, list.Count - index); 

Conversely, you can use:

list.GetRange(index, count); 

But that will create a new list, which may not be what you want.

Answer 2

sans LINQ quicky...

    while (myList.Count>countIWant)         myList.RemoveAt(myList.Count-1);