Bài viết sưu tầm

        {

            DataTable bang = new DataTable();

            DataTable bang1 = new DataTable();

            bang = lop.table("select * from Menucap1");

            for (int i = 0; i < bang.Rows.Count; i++)

            {

                ToolStripMenuItem mm = new ToolStripMenuItem();

                mm.Text = bang.Rows[i][1].ToString().Trim() ;

                bang1 = lop.table(string.Format("select * from Menucap2 where Macap1 ='{0}'", bang.Rows[i][0].ToString()));

                for (int j = 0; j < bang1.Rows.Count; j++)

                {

                    ToolStripMenuItem mm1 = new ToolStripMenuItem();

                    mm1.Text = bang1.Rows[j][1].ToString().Trim();

                    mm.DropDownItems.Add(mm1);

                }

                menuStrip1.Items.Add(mm);

            }

        }