private void m_llb_hoa_don_nhap_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
 {
     QuanLyBanHang.GiaoDich.F210_Hoa_don_nhap v_frm = new GiaoDich.F210_Hoa_don_nhap();
     v_frm.ShowDialog();
 }
 private void GiaoDichHoaDonNhap_Click(object sender, EventArgs e)
 {
     QuanLyBanHang.GiaoDich.F210_Hoa_don_nhap v_frm = new GiaoDich.F210_Hoa_don_nhap();
     v_frm.ShowDialog();
 }