AutocompleteMenuNS.AutocompleteMenu.ProcessKey C# (CSharp) Method

        public bool ProcessKey(char c, Keys keyModifiers)
        {
            var page = Host.Height/(Font.Height + 4);
            if (keyModifiers == Keys.None)
                switch ((Keys) c)
                {
                    case Keys.Down:
                        SelectNext(+1);
                        return true;

                    case Keys.PageDown:
                        SelectNext(+page);
                        return true;

                    case Keys.Up:
                        SelectNext(-1);
                        return true;

                    case Keys.PageUp:
                        SelectNext(-page);
                        return true;

                    case Keys.Enter:
                        OnSelecting();
                        return true;

                    case Keys.Tab:
                        if (!AllowsTabKey)
                            break;
                        OnSelecting();
                        return true;

                    case Keys.Left:
                    case Keys.Right:
                        Close();
                        return false;

                    case Keys.Escape:
                        Close();
                        return true;
                }

            return false;
        }