iequatable for multiple list nn a class c# code example

Example 1: list with two values c#

List<Tuple<T1, T2>> list;

Example 2: List of 2 different iherent classes c#'

List<BaseA> list = ...

  var result = list
    .OfType<AA>() // Filter out AA instances only
    .ElementAt(0) // or just First();
    .AID;