public void LoadKho()
        {
            KhoBLL bLL = new KhoBLL();

            cbKhoNhap.DataSource    = bLL.GetListKho();
            cbKhoNhap.DisplayMember = "TenKho";
        }
        public void LoadKho()
        {
            KhoBLL bLL = new KhoBLL();

            cbKhoNhap.DataSource    = bLL.GetListKho();
            cbKhoNhap.DisplayMember = "TenKho";
            txbDiaDiem.Text         = ((DataRowView)cbKhoNhap.SelectedItem)?["DiaDiem"].ToString();
        }