private void frmKhaibaogiavp_thoigian_Load(object sender, EventArgs e)
        {
            bCncenter = v.bServercenter(ichinhanh);
            sdbclient = "";
            itablell  = v.tableid("", "v_giavp");

            f_Set_Fullgrid();
            f_Load_Tree();
            f_Load_chinhanh();
            if (bCncenter || cbchinhanh.Items.Count == 0)
            {
                butChuyen.Enabled = butLuu.Enabled = true;
            }
            else
            {
                butChuyen.Enabled = butLuu.Enabled = false;
            }
            f_Load_Dongia_goc();
            ttStatus.Text    = "";
            this.WindowState = FormWindowState.Maximized;
            this.Refresh();
        }