沐風心揚C#プログラミング速査シリーズのショートカットキーの使用

WinForm           Form      Keypreview  true

private void MainForm_KeyUp(object sender, KeyEventArgs e)

        {
            switch (e.KeyCode)
            {
                case Keys.Escape:
                    Application.Exit();
                    break;
                case Keys.Delete:
                    btnClearLine_Click(null, null);
                    break;
                case Keys.F1:
                    AboutBox aboutBox = new AboutBox();
                    aboutBox.ShowDialog();
                    break;
            }
            if (e.Control && e.KeyCode == Keys.O)//     ctrl+o
            {
                btnOpenData_Click(null, null);
            }
            if (e.Control && e.KeyCode == Keys.Delete)//     ctrl+delete
            {
                btnAllClear_Click(null, null);
            }
        }

       
 if (e.Modifiers == Keys.Control && e.KeyCode == Keys.A)
            {
                ((TextBox)sender).SelectAll();
            }