private void cmbProduct_SelectedIndexChanged(object sender, EventArgs e) { try { DataTable dt = ClassSetting.selectProductDeatail((int)cmbProduct.SelectedValue); txtColor.Text = dt.Rows[0][3].ToString(); txtType.Text = dt.Rows[0][4].ToString(); cat_id = int.Parse(dt.Rows[0][0].ToString()); color_id = int.Parse(dt.Rows[0][1].ToString()); type_id = int.Parse(dt.Rows[0][2].ToString()); } catch (Exception) { } }