动态修改DataTable中某列的值并绑定到DataGridView

                DataTable dt = igmbll.getAllVWShopGoodsPurMas();

                foreach (DataRow Row in dt.Rows)
                {
                    Row[4] = Convert.ToDecimal(Row[4].ToString());
                    dgvVWShopGoodPurMas.Rows.Add(Row.ItemArray);//
                }
                this.dgvVWShopGoodPurMas.DataSource = dt;