A little for each helper to do for each loops either to the end or until a condition is met.

ForEachUntil.cs

public static class ForEachHelper
{
  public static void ForEachUntil<T>(IEnumerable<T> enumerable, Func<T, bool> until, Action<T> loopInner)
  {
    var enumerator = enumerable.GetEnumerator();
    while (enumerator.MoveNext() && !until(enumerator.Current))
    {
      loopInner(enumerator.Current);
    }
  }
}