private void frmMain_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.F1)
{
frmTroGiup frm = new frmTroGiup();
frm.ShowDialog();
}
}
private void tRỢGIÚPToolStripMenuItem1_Click(object sender, EventArgs e)
{
frmTroGiup frm = new frmTroGiup();
frm.ShowDialog();
}