Co-variant array conversion from x to y may cause run-time exception

Question

I have a private readonly list of LinkLabels (IList). I later add LinkLabels to this list and add those

Answer 1

The issue's root cause is correctly described in other answers, but to resolve the warning, you can always write:

_list.ForEach(lnkLbl => flPanel.Controls.Add(lnkLbl));