private void button2_Click(object sender, EventArgs e) { DataTable Dt = controllerObj.GetItemIDbyName(listView1.SelectedItems[0].Text); controllerObj.Edit_ItemAvailability(Int16.Parse(Dt.Rows[0]["ID"].ToString())); listView1.Clear(); DataTable dt = controllerObj.GetMenuItems(); for (int i = 0; i < dt.Rows.Count; i++) { listView1.Items.Add(dt.Rows[i]["Name"].ToString()); Boolean av = Boolean.Parse(controllerObj.GetAv(dt.Rows[i]["Name"].ToString()).ToString()); listView1.Items[i].Checked = av; } }