call a function for each value in a generic c# collection [duplicate]

Answer 1

As other posters have noted, you can use List.ForEach.

However, you can easily write an extension method that allows you to use ForEach on any IEnumerable

public static void ForEach(this IEnumerable source, Action action)
{
    foreach(T item in source)
        action(item);
}

Which means you can now do:

myList.Where( ... ).ForEach( ... );