private void button1_Click(object sender, EventArgs e)
{
Frm_KhachHang khachhang = new Frm_KhachHang();
khachhang.Show();
dgv_danhsachspban.Refresh();
}
private void quảnLýKháchHàngToolStripMenuItem_Click(object sender, EventArgs e)
{
if (!CheckExistForm("Frm_KhachHang"))
{
Frm_KhachHang fm_KH = new Frm_KhachHang();
fm_KH.MdiParent = this;
fm_KH.Show();
}
else
{
ActiveChildForm("Frm_KhachHang");
}
}
