AutoTyper.MainForm._typer_Started C# (CSharp) Méthode

        private void _typer_Started(object sender, IntEventArgs e)
        {
            lblInfo.Text = "AutoTyper started. Change scenario using Ctrl + Shift + function key(F1 - F12)";            
            cboKey.SelectedIndex = e.Value;
            cboKey.Enabled = false;
            rtbTextToType.SelectAll();
            rtbTextToType.SelectionBackColor = rtbTextToType.BackColor;
            string firstChars = rtbTextToType.Text.Length > 20 ? rtbTextToType.Text.Substring(0, 20) + "..." : rtbTextToType.Text;
            niTaskBar.Text = $"AutoTyper - Started using F{(e.Value + 1).ToString()}\n{firstChars}";
            switch (e.Value)
            {
                case 0:
                    niTaskBar.Icon = Resources.F1;
                    break;
                case 1:
                    niTaskBar.Icon = Resources.F2;
                    break;
                case 2:
                    niTaskBar.Icon = Resources.F3;
                    break;
                case 3:
                    niTaskBar.Icon = Resources.F4;
                    break;
                case 4:
                    niTaskBar.Icon = Resources.F5;
                    break;
                case 5:
                    niTaskBar.Icon = Resources.F6;
                    break;
                case 6:
                    niTaskBar.Icon = Resources.F7;
                    break;
                case 7:
                    niTaskBar.Icon = Resources.F8;
                    break;
                case 8:
                    niTaskBar.Icon = Resources.F9;
                    break;
                case 9:
                    niTaskBar.Icon = Resources.F10;
                    break;
                case 10:
                    niTaskBar.Icon = Resources.F11;
                    break;
                case 11:
                    niTaskBar.Icon = Resources.F12;
                    break;
            }

        }