ACPAddIn.AutoCompleteForm.listBox1_KeyDown C# (CSharp) Метод

        private void listBox1_KeyDown(object sender, KeyEventArgs e)
        {
            controlKeyPressed = false;

            if (ModifierKeys == Keys.Control)
            {
                // Set control key to true to allow listBox1_keyPressed to know that
                // control key is been pressed. This is to prevent control + <key>
                // to be sent back to Microsoft Word.
                // Eg. Pressing CTRL + N while on the listBox will not pass CTRL + N to
                // Microsoft Word.
                controlKeyPressed = true;

                Keys[] keys = {Keys.D1, Keys.D2, Keys.D3, Keys.D4, Keys.D5,
                                 Keys.D6, Keys.D7, Keys.D8, Keys.D9};

                for (int i = 0; i < this.getDisplaySuggestionCount(); i++)
                {
                    if (e.KeyCode == keys[i])
                    {
                        quickPaste(i);
                        e.Handled = true;
                    }
                }
            }
            else if (e.KeyCode == Keys.Left)
            {
                e.Handled = true;
                previousSuggestionPage();
            }
            else if (e.KeyCode == Keys.Right)
            {
                e.Handled = true;
                nextSuggestionPage();
            }
            else if (e.KeyCode == Keys.Enter)
            {
                Globals.ThisAddIn.insertSuggestion(displaySuggestion[listBox1.SelectedIndex]);
            }
            else if (e.KeyCode == Keys.Escape)
            {
                this.Hide();
            }
            else
            {
                String result = "";

                char key = (char)e.KeyCode;

                if (e.KeyCode == Keys.Tab)
                {
                    result = "{tab}";
                }

                if (!result.Equals(""))
                {
                    Globals.ThisAddIn.Application.Activate();
                    SendKeys.Send(result);
                    this.Hide();
                    e.Handled = true;
                }
            }
        }