示例#1
0
        // 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
        }
示例#2
0
        // 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
        }