Saving my program

harold4964 · May 20th, 2011, 10:43 PM

Hi there
Im trying diffrent things i have learnt so far but am struggling with saving
I have created 2 forms to save onto a main form. It is a simple service records program where i enter the Date, milage and type of service for each vehicle I have and save it to a main form where i can see where each vehicle is up to
The main form updates fine for the two vehicles but I cant work out where im going wrong in saving it
It goes through and asks me to save it, I give it a name, click save, it disapears then when i go into it Its not there
any idea on where i have gone wrong
here is the code

Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Car_Service
{
    public partial class serviceRecordsForm : Form
    {
        public serviceRecordsForm()
        {
            InitializeComponent();
        }

        private void addNewRecordTyphoon_Click(object sender, EventArgs e)
        {
            addNewRecordTyphoon newRecordTyphoonDialog;
            newRecordTyphoonDialog = new addNewRecordTyphoon();
            if (newRecordTyphoonDialog.ShowDialog() == DialogResult.OK)
            {
                typhoonDateListBox.Items.Add    (newRecordTyphoonDialog.dateTyphoonRichTextBox.Text);
                typhoonOdoListBox.Items.Add(newRecordTyphoonDialog.kilometerTyphoonRichTextBox.Text);
                typhoonServiceListBox.Items.Add(newRecordTyphoonDialog.typhoonComboBox.Text);

            }
        }

        private void addNewRecordCruiser_Click(object sender, EventArgs e)
        {
            addNewRecordCruiser newRecordCruiserDialog;
            newRecordCruiserDialog = new addNewRecordCruiser();
            if (newRecordCruiserDialog.ShowDialog() == DialogResult.OK)
            {
                cruiserDateListBox.Items.Add(newRecordCruiserDialog.dateCruiserRichTextBox.Text);
                cruiserOdoListBox.Items.Add(newRecordCruiserDialog.kilometerCruiserRichTextBox.Text);
                cruiserServiceListBox.Items.Add(newRecordCruiserDialog.cruiserComboBox.Text);

            }
        }

        private void saveToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (saveFileDialog.ShowDialog() == DialogResult.OK)
            {
                cruiserDateListBox.Text = saveFileDialog.FileName;
                typhoonDateListBox.Text = saveFileDialog.FileName;
                cruiserOdoListBox.Text = saveFileDialog.FileName;
                typhoonOdoListBox.Text = saveFileDialog.FileName;
                cruiserServiceListBox.Text = saveFileDialog.FileName;
                typhoonServiceListBox.Text = saveFileDialog.FileName;
        }

      }

    }
}

cheers Harold

Rod Stephens · May 21st, 2011, 10:18 AM

Do you mean you're trying to save the data into a file?

It looks like the code you have tries to write the name of the selected file into the ListBoxes.

Take a look at Lesson 29, "Reading and Writing Files." ListBoxes can hold lots of values so you'll need to loop through them when writing.

If you want to read the values back out of the file when the program starts, you'll need to know how many items are in each ListBox. To do that, you could start by writing the ListBox's number of items into the file. Here's the basic idea:

Writing:
Write the number of items on its own line
foreach item in listbox.items
Write the item on its own line
Repeat for each ListBox

Reading:
Read the number of items from a line
for i = 0; i < number read
Read a listbox item
Repeat for each ListBox

Give it a try to see how far you get and let us know how it goes.

jenifer.quin · May 21st, 2011, 10:56 AM

iPhone 5

harold4964 · May 21st, 2011, 10:15 PM

Thanks for that Rod
I will have a look at that lesson although I dont want to get too far ahead of my self
What im doing is making a program from the things I have learnt from you after the tutorials just to see if im grasping the idea and hopefully the end result will be something I can use

Thanks a bunch on your help

Harold