沐风心扬C#编程速查系列之快捷键的使用

WinForm开发中使用快捷键需要在Form的属性栏中将Keypreview设为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)//按下组合键ctrl+o
            {
                btnOpenData_Click(null, null);
            }
            if (e.Control && e.KeyCode == Keys.Delete)//按下组合键ctrl+delete
            {
                btnAllClear_Click(null, null);
            }
        }

如何判断组合键
 if (e.Modifiers == Keys.Control && e.KeyCode == Keys.A)
            {
                ((TextBox)sender).SelectAll();
            }