如何为 label 设置货币格式

Question

I want to show the currency format for the tow labels like this "150,000,000"

this is my code

cn.Open();
            cm = new SqlCommand("SELECT SUM(price*qty),SUM(buy_price*qty) FROM tblproduct", cn);
            dr = cm.ExecuteReader();
            while (dr.Read())
            {

                lblTprice.Text = dr[0].ToString();
                lblTbuyPrice.Text = dr[1].ToString();
                

            }
            dr.Close();
            cn.Close();

Answer 1

lblTprice.Text = dr[0].ToString("C", CultureInfo.CurrentCulture);
lblTbuyPrice.Text = dr[1].ToString("C", CultureInfo.CurrentCulture);