This tutorial will teach you Profit and Commission Calculation using C#.net.while calculating the commission from the profit include 1% commission. Paste the code inside the ok button private void button1_Click(object sender, EventArgs e) { double buyprice = double.Parse(txtBprice.Text); double sellprice = double.Parse(txtSprice.Text); //Profit double tot = sellprice - buyprice; txtProfit.Text = tot.ToString(); //Commission double comm = tot * 1/100; txtComm.Text …