Concatenate multiple IEnumerable

Question

I\'m trying to implement a method to concatenate multiple Lists e.g.

List l1 = new List { \"1\", \"2\" };
List

        

Answer 1

Just for completeness another imo noteworthy approach:

public static IEnumerable Concatenate(params IEnumerable[] List)
{
    foreach (IEnumerable element in List)
    {
        foreach (T subelement in element)
        {
            yield return subelement;
        }
    }
}