private void mnuBuuGui_Click(object sender, EventArgs e)
{
frmQuanLyBuuGui quanLiBuuGui = new frmQuanLyBuuGui();
quanLiBuuGui.Show();
}
private void btnBuuGui_Click(object sender, EventArgs e)
{
frmQuanLyBuuGui frmbuuGui = new frmQuanLyBuuGui();
frmbuuGui.Show();
}