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"); 

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