private void newtemplate_btn_Click(object sender, EventArgs e) { Item_Template frm = new Item_Template(); frm.ShowDialog(); this.itemTemplateTableAdapter.Fill(this.eNGDataDataSet.ItemTemplate); eNGDataDataSet.Tables[0].Rows.Add("Other"); template_cbo.DataSource = eNGDataDataSet.Tables[0]; template_cbo.DisplayMember = "Title"; template_cbo.ValueMember = "Title"; }