- Right-click the form and click View Code
- Just under #endregion, define the following function:
public void CalculatePrice()
{
double PriceSize = 0.00;
double PriceEachTopping, BWings, Bread,
SodaCan, Soda20, Soda2L, OJ, Water, PriceToppings, TotalOrder;
int Pepperoni, Sausage, ExtraCheese, Onions, Olives;
// Get the price of pizza depending on the selected size
if( rdoSmall.get_Checked() == true )
PriceSize = System.Convert.ToDouble(txtSmall.get_Text());
if( rdoMedium.get_Checked() == true )
PriceSize = System.Convert.ToDouble(txtMedium.get_Text());
if( rdoLarge.get_Checked() == true )
PriceSize = System.Convert.ToDouble(txtLarge.get_Text());
// Get the price of a topping if it was selected
if( chkPepperoni.get_Checked() == true )
Pepperoni = 1;
else
Pepperoni = 0;
if( chkSausage.get_Checked() == true )
Sausage = 1;
else
Sausage = 0;
if( chkExtraCheese.get_Checked() == true )
ExtraCheese = 1;
else
ExtraCheese = 0;
if( chkOnions.get_Checked() == true )
Onions = 1;
else
Onions = 0;
if( chkOlives.get_Checked() == true )
Olives = 1;
else
Olives = 0;
PriceEachTopping = System.Convert.ToDouble(txtEachTopping.get_Text());
PriceToppings = (Pepperoni + Sausage + ExtraCheese + Onions + Olives) * PriceEachTopping;
// Calculate the price of the side dishes
// depending on the quantity entered
BWings = System.Convert.ToDouble(txtTotalWings.get_Text());
Bread = System.Convert.ToDouble(txtTotalBread.get_Text());
// Calculate the price of the drink(s)
SodaCan = System.Convert.ToDouble(txtTotalCan.get_Text());
Soda20 = System.Convert.ToDouble(txtTotalSoda20.get_Text());
Soda2L = System.Convert.ToDouble(txtTotalSoda2L.get_Text());
OJ = System.Convert.ToDouble(txtTotalOJ.get_Text());
Water = System.Convert.ToDouble(txtTotalWater.get_Text());
TotalOrder = PriceSize + PriceToppings + BWings + Bread +
SodaCan + Soda20 + Soda2L + OJ + Water;
txtTotalPrice.set_Text(String.Format("{0:C}", (System.Double)TotalOrder));
}
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- On the form double-click each radio button and each check box
- In their implementation, simply call the CalculatePrice()
function:
private void rdoSmall_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
private void rdoMedium_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
private void rdoLarge_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
private void chkPepperoni_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
private void chkSausage_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
private void chkExtraCheese_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
private void chkOlives_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
private void chkOnions_CheckedChanged (Object sender, System.EventArgs e)
{
CalculatePrice();
}
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- Test the application
- On the form, click the Qty text box corresponding to the Bread
Sticks
- In the Properties window, click the Events button
and, in the list of events, double-click Leave
- In the same way, initiate the Leave of the Qty text box of the
Buffalo Wings and the drinks
- Implement the events as follows:
private void txtQtyBread_Leave (Object sender, System.EventArgs e)
{
int Qty;
double Price, Total;
if( txtQtyBread.get_Text() == "" )
Qty = 0;
else
Qty = System.Convert.ToInt32(txtQtyBread.get_Text());
Price = System.Convert.ToDouble(txtPriceBread.get_Text());
Total = Qty * Price;
txtTotalBread.set_Text(String.Format("{0:F}", (System.Double)Total));
CalculatePrice();
}
private void txtQtyWings_Leave (Object sender, System.EventArgs e)
{
int Qty;
double Price, Total;
if( txtQtyWings.get_Text() == "" )
Qty = 0;
else
Qty = System.Convert.ToInt32(txtQtyWings.get_Text());
Price = System.Convert.ToDouble(txtPriceWings.get_Text());
Total = Qty * Price;
txtTotalWings.set_Text(String.Format("{0:F}", (System.Double)Total));
CalculatePrice();
}
private void txtQtyCan_Leave (Object sender, System.EventArgs e)
{
int Qty;
double Price, Total;
if( txtQtyCan.get_Text() == "" )
Qty = 0;
else
Qty = System.Convert.ToInt32(txtQtyCan.get_Text());
Price = System.Convert.ToDouble(txtPriceCan.get_Text());
Total = Qty * Price;
txtTotalCan.set_Text(String.Format("{0:F}", (System.Double)Total));
CalculatePrice();
}
private void txtQtySoda20_Leave (Object sender, System.EventArgs e)
{
int Qty;
double Price, Total;
if( txtQtySoda20.get_Text() == "" )
Qty = 0;
else
Qty = System.Convert.ToInt32(txtQtySoda20.get_Text());
Price = System.Convert.ToDouble(txtPriceSoda20.get_Text());
Total = Qty * Price;
txtTotalSoda20.set_Text(String.Format("{0:F}", (System.Double)Total));
CalculatePrice();
}
private void txtQtySoda2L_Leave (Object sender, System.EventArgs e)
{
int Qty;
double Price, Total;
if( txtQtySoda2L.get_Text() == "" )
Qty = 0;
else
Qty = System.Convert.ToInt32(txtQtySoda2L.get_Text());
Price = System.Convert.ToDouble(txtPriceSoda2L.get_Text());
Total = Qty * Price;
txtTotalSoda2L.set_Text(String.Format("{0:F}", (System.Double)Total));
CalculatePrice();
}
private void txtQtyOJ_Leave (Object sender, System.EventArgs e)
{
int Qty;
double Price, Total;
if( txtQtyOJ.get_Text() == "" )
Qty = 0;
else
Qty = System.Convert.ToInt32(txtQtyOJ.get_Text());
Price = System.Convert.ToDouble(txtPriceOJ.get_Text());
Total = Qty * Price;
txtTotalOJ.set_Text(String.Format("{0:F}", (System.Double)Total));
CalculatePrice();
}
private void txtQtyWater_Leave (Object sender, System.EventArgs e)
{
int Qty;
double Price, Total;
if( txtQtyWater.get_Text() == "" )
Qty = 0;
else
Qty = System.Convert.ToInt32(txtQtyWater.get_Text());
Price = System.Convert.ToDouble(txtPriceWater.get_Text());
Total = Qty * Price;
txtTotalWater.set_Text(String.Format("{0:F}", (System.Double)Total));
CalculatePrice();
}
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- On the form, double-click the Close button and implement its Click
event as follows:
private void button1_Click (Object sender, System.EventArgs e)
{
Close();
}
|
- Test the application
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