//Clears and sets the form for next user input.
private void ClearButton_Click(object sender, EventArgs e)
{ //Visible and enabled status are changed to default.
DetailsGroupBox.Enabled = true;
DetailsGroupBox.Visible = true;
CalculateGroupBox.Visible = false;
SummaryGroupBox.Visible = false;
//String boxes for input is emptied.
FullFareRiderTextBox.Text = string.Empty;
StudentRiderTextBox.Text = string.Empty;
DiscountRiderTextBox.Text = string.Empty;
DriverNameTextBox.Text = string.Empty;
DriverNameTextBox.Focus();
CalculateButton.Enabled = true;
SummaryButton.Enabled = false;
}
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();
}
}