The value of a scroll bar can only be integer. Let's suppose you would like to write a program that lets the user select the cost of a meal and then displays the amount of tip. We would like to let the user select an amount from 0 to $100.00. The solution is to make the Maximum value of the scroll bar 10000. When an amount is selected, the value is divided by 100 to give the desired values.
hsbCost with the following properties:
Write the code for the change event on the scroll bar:
private void hsbCost_Scroll(object sender, ScrollEventArgs e) { // Tip is between 15% and 20% double cost = this.hsbCost.Value / 100; // divide value by 100 to get 2 decimal places lblCost.Text = cost.ToString("$0.00"); // format numbers to 2 decimal places double tip1 = cost * 0.15; // 15% tip lblTip1.Text = tip1.ToString("$0.00"); // format with 2 decimal places double tip2 = cost * 0.2; // 20% tip lblTip2.Text = tip2.ToString("$0.00"); // format with 2 decimal places }
