// Precondition: Insert, Letter menu item activated
// Postcondition: The Letter dialog box is displayed. If data entered
// are OK, a Letter is created and added to the list
// of parcels
private void letterToolStripMenuItem_Click(object sender, EventArgs e)
{
LetterForm letterForm; // The letter dialog box form
DialogResult result; // The result of showing form as dialog
if (addressList.Count < LetterForm.MIN_ADDRESSES) // Make sure we have enough addresses
{
MessageBox.Show("Need " + LetterForm.MIN_ADDRESSES + " addresses to create letter!",
"Addresses Error");
return;
}
letterForm = new LetterForm(addressList); // Send list of addresses
result = letterForm.ShowDialog();
if (result == DialogResult.OK) // Only add if OK
{
try
{
// For this to work, LetterForm's combo boxes need to be in same
// order as addressList
Letter newLetter = new Letter(addressList[letterForm.OriginAddressIndex],
addressList[letterForm.DestinationAddressIndex],
decimal.Parse(letterForm.FixedCostText)); // Letter to be inserted
parcelList.Add(newLetter);
}
catch (FormatException) // This should never happen if form validation works!
{
MessageBox.Show("Problem with Letter Validation!", "Validation Error");
}
}
letterForm.Dispose(); // Best practice for dialog boxes
}
// Precondition: Insert, Letter menu item activated
// Postcondition: The Letter dialog box is displayed. If data entered
// are OK, a Letter is created and added to the list
// of parcels
private void letterToolStripMenuItem_Click(object sender, EventArgs e)
{
LetterForm letterForm; // The letter dialog box form
DialogResult result; // The result of showing form as dialog
if (addressList.Count < LetterForm.MIN_ADDRESSES) // Make sure we have enough addresses
{
MessageBox.Show("Need " + LetterForm.MIN_ADDRESSES + " addresses to create letter!",
"Addresses Error");
return;
}
letterForm = new LetterForm(addressList); // Send list of addresses
result = letterForm.ShowDialog();
if (result == DialogResult.OK) // Only add if OK
{
try
{
// For this to work, LetterForm's combo boxes need to be in same
// order as addressList
Letter newLetter = new Letter(addressList[letterForm.OriginAddressIndex],
addressList[letterForm.DestinationAddressIndex],
decimal.Parse(letterForm.FixedCostText)); // Letter to be inserted
parcelList.Add(newLetter);
}
catch (FormatException) // This should never happen if form validation works!
{
MessageBox.Show("Problem with Letter Validation!", "Validation Error");
}
}
letterForm.Dispose(); // Best practice for dialog boxes
}