private void CalculateButton_Click(object sender, EventArgs e)
{
//Declaring local variables.
int NoOfFullFareRider = 0, NoOfStudentRider = 0, NoOfDiscountRider = 0, NoOfTotalPassenger = 0;
decimal Receipt = 0m;
//Checks if Driver name is given.
if (DriverNameTextBox.Text != "")
{
//Parsing is done in all try blocks.
try
{
NoOfFullFareRider = int.Parse(FullFareRiderTextBox.Text);
try
{
NoOfStudentRider = int.Parse(StudentRiderTextBox.Text);
try
{
NoOfDiscountRider = int.Parse(DiscountRiderTextBox.Text);
//Passengers are calculated for the particular driver.
NoOfTotalPassenger = NoOfFullFareRider + NoOfStudentRider + NoOfDiscountRider;
//Global variables for count is incremented.
TotalDrivers += 1;
TotalPassengers = TotalPassengers + NoOfTotalPassenger;
//Calculation and visibile change are done.
Receipt = (NoOfFullFareRider * FullFare) + (NoOfStudentRider * StudentFare) + (NoOfDiscountRider * DiscountFare);
TotalReceipts = TotalReceipts + Receipt;
CalculateButton.Enabled = false;
SummaryButton.Enabled = true;
DetailsGroupBox.Enabled = false;
CalculateGroupBox.Visible = true;
//Calculated summary for particular driver is displayed.
CalculateDriverNameDisplayLabel.Text = DriverNameTextBox.Text;
CalculateTotalPassengerDisplayLabel.Text = NoOfTotalPassenger.ToString();
CalculateTotalReceiptsDisplayLabel.Text = Receipt.ToString("c", new CultureInfo("en-FR"));
CalculateAvgReceiptsDisplayLabel.Text = (Receipt / NoOfTotalPassenger).ToString("c", new CultureInfo("en-FR"));
}
//Try exceptions thrown are handled by catch blocks.
catch
{
MessageBox.Show("Please enter numerical discount rider", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
DiscountRiderTextBox.Focus();
DiscountRiderTextBox.SelectAll();
}
}
catch
{
MessageBox.Show("Please enter numerical Student rider", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
StudentRiderTextBox.Focus();
StudentRiderTextBox.SelectAll();
}
}
catch
{
MessageBox.Show("Please enter numerical Full Fare rider", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
FullFareRiderTextBox.Focus();
FullFareRiderTextBox.SelectAll();
}
}
else
{
//Exception if driver name text box is left empty.
MessageBox.Show("Please enter driver name", "Enter data", MessageBoxButtons.OK, MessageBoxIcon.Error);
DriverNameTextBox.Focus();
}
}
private void CalculateButton_Click(object sender, EventArgs e)
{
int NoOfFullFareRider = 0, NoOfStudentRider = 0, NoOfDiscountRider = 0, NoOfTotalPassenger = 0;
//This block is executed until an exception is thrown.
try
{
if (DriversNameTextBox.Text != "")
{
//Counts the total drivers in the company.
CalculateNameDisplay.Text = DriversNameTextBox.Text;
if (CalculateNameDisplay.Text != "")
{
TotalDrivers = TotalDrivers + 1;
}
/*
* Parsing the input values into an integer and displaying the total passengers.
* Parsed values are stored inside the assigned int var.
*/
TotalPassengerDisplayLabel.Text = ((NoOfFullFareRider = int.Parse(FullFareTextBox.Text)) + (NoOfStudentRider = int.Parse(StudentRiderTextBox.Text)) + (NoOfDiscountRider = int.Parse(DiscountRiderTextBox.Text))).ToString();
NoOfTotalPassenger = NoOfFullFareRider + NoOfStudentRider + NoOfDiscountRider;
TotalFare = NoOfFullFareRider * FullFare + NoOfStudentRider * StudentFare + NoOfDiscountRider * DiscountFare;
//Currency Formatting is done do display amount in euros.
TotalReceiptsDisplay.Text = (TotalFare).ToString("C", new CultureInfo("en-FR"));
CalculateButton.Enabled = false;
SummaryButton.Enabled = true;
DetailsGroupBox.Enabled = false;
CalculateGroupBox.Visible = true;
AvgReceiptsDisplay.Text = (TotalFare / NoOfTotalPassenger).ToString("c", new CultureInfo("en-FR"));
//Counts the total passengers & receipts if condition satisfies.
if (NoOfFullFareRider != 0 && NoOfStudentRider != 0 && NoOfDiscountRider != 0)
{
TotalPassengers = TotalPassengers + NoOfTotalPassenger;
TotalReceipts = TotalReceipts + TotalFare;
}
}
else
{
MessageBox.Show("Please enter driver name", "No Data", MessageBoxButtons.OK, MessageBoxIcon.Error);
DriversNameTextBox.Focus();
}
}
//This block handles an exception if found.
catch
{
if (NoOfFullFareRider != 0)
{
if (NoOfStudentRider != 0)
{
if (NoOfDiscountRider != 0)
{
}
/*
* Every else block displays an error message respective to its if condition,
* Empties and focusses on the box of error.
* Decrements the default increment of total drivers.
*/
else
{
MessageBox.Show("Please enter numerical data for discount rider", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
DiscountRiderTextBox.Text = string.Empty;
DiscountRiderTextBox.Focus();
TotalDrivers -= 1;
}
}
else
{
MessageBox.Show("Please enter numerical data for student rider", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
StudentRiderTextBox.Text = string.Empty;
StudentRiderTextBox.Focus();
TotalDrivers -= 1;
}
}
else
{
MessageBox.Show("Please enter numerical data for full fare rider", "Data Entry Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
FullFareTextBox.Text = string.Empty;
FullFareTextBox.Focus();
TotalDrivers -= 1;
}
}
}