C# (CSharp) DisplayMemberChanged примеры использования

Пример #1

 private void Box_DisplayMemberChanged(object sender, EventArgs e)
 {
     DisplayMemberChanged?.Invoke(sender, e);
 }

Пример #2

 protected virtual void OnDisplayMemberChanged(EventArgs e)
 {
     DisplayMemberChanged?.Invoke(this, e);
 }