
Use an Extension Method to Update All Items in a List
Learn how to use an extension method to update all of the items in a list with C#. public static IEnumerable ForEach(this IEnumerable collection, Action action){ //Loop thru the collection foreach (T item in collection) { action(item); } return collection;} Example: californiaClients.ForEach(timezone = timeZone.value = “PST”);