gistfile1.cs

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;
using System.IO;

// Prog 118
//Program name: NicoleBuckProject3, File name: NicoleBuckProject4, Date: 6/12/12
//Nicole Buck
//Program allows users to enter and compare book details


namespace NicoleBuckProject3
{
    public partial class bookCatalog : Form
    {
        List<Book> books = new List<Book>();

        public bookCatalog()
        {
            InitializeComponent();
            LoadingFile();
            Summary();
            UpdateListBox();
        }

        //Reset button
        private void resetButton_Click(object sender, EventArgs e)
        {
            DialogResult answer =
            MessageBox.Show("Are you sure you want to reset the fields?", "Reset fields",
                MessageBoxButtons.YesNo,
                MessageBoxIcon.Warning,
                MessageBoxDefaultButton.Button2);

            if (answer == DialogResult.Yes)
            {
                isbnTextBox.Clear();
                lastNameTextBox.Clear();
                firstNameTextBox.Clear();
                titleTextBox.Clear();
                yearTextBox.Clear();
                priceTextBox.Clear();


            }
        }

        //exit button
        private void exitButton_Click(object sender, EventArgs e)
        {
            DialogResult exit =
            MessageBox.Show("Are you sure you want to save and exit?", "Exit Application",
            MessageBoxButtons.YesNo,
            MessageBoxIcon.Warning,
            MessageBoxDefaultButton.Button2);

            if (exit == DialogResult.Yes)
            {
                SavingFile();
                Application.Exit();
            }
        }

        private void addBookButton_Click(object sender, EventArgs e)
        {
            Book book = new Book();
            book.Isbn = new ISBN(isbnTextBox.Text);
            book.LastName = lastNameTextBox.Text;
            book.FirstName = firstNameTextBox.Text;
            book.Year = Convert.ToInt32(yearTextBox.Text);
            book.Price = Convert.ToDouble(priceTextBox.Text);

            //Used to compare ISBNs and to clear out text boxes if it is valid
            foreach (Book item in books)
            {
                if (Equals(book.Isbn) == false)
                {
                    isbnTextBox.Clear();
                    lastNameTextBox.Clear();
                    firstNameTextBox.Clear();
                    titleTextBox.Clear();
                    yearTextBox.Clear();
                    priceTextBox.Clear();

                }

            }
            books.Add(book);
            UpdateListBox();
            Summary();

        }

        public void UpdateListBox()
        {
            summaryListBox.Items.Clear();
            foreach (Book book in books)
            {
                summaryListBox.Items.Add(book.ToString());

            }
        }

        public void SavingFile()
        {
            StreamWriter writer = new StreamWriter("books.txt");

            foreach (Book book in books)
            {
                writer.WriteLine(book.ToString());

            }
        }

        public void LoadingFile()
        {
            const char DELIM = '\t';
            string recordIn = "";
            string[] parts;

            FileStream file = new FileStream("books.txt", FileMode.Open, FileAccess.Read);
            StreamReader reader = new StreamReader(file);

            while (reader.Peek() != -1)
            {

                Book book = new Book();
                recordIn = reader.ReadLine();
                parts = recordIn.Split(DELIM);

                if (parts.Length == 6)
                {
                    book.Isbn = new ISBN(parts[0]);
                    book.LastName = parts[1];
                    book.FirstName = parts[2];
                    book.Title = parts[3];
                    book.Year = Convert.ToInt32(parts[4]);
                    book.Price = Convert.ToDouble(parts[5]);

                    if (book.Valid() && NewBook(book))
                    {

                        books.Add(book);
                    }
                }

            }


            reader.Close();
            file.Close();
        }

        private bool NewBook(Book ckbook)
        {
            foreach (Book book in books)
            {
                if (ckbook.Isbn.Equals(book.Isbn))
                {
                    return false;
                }
            }

            return true;
        }

        //remove tab
        private void removeButton_Click(object sender, EventArgs e)
        {
            ISBN isbn = new ISBN(removeTextBox.Text);
            if (removeIsbnRadioButton.Checked)
            {
                foreach (Book book in books)
                {
                    if (book.Isbn.Normalize().Equals(isbn.Normalize()))
                    {
                        books.Remove(book);
                        UpdateListBox();
                        break;
                    }
                }
            }

            else  if (removeLastNameRadioButton.Checked)
            {
                foreach (Book book in books)
                {
                    if (book.LastName.ToLower() == removeTextBox.Text.ToLower())
                    {
                        books.Remove(book);
                        UpdateListBox();
                        break;
                    }
                }

            }

            else if (removeTitleRadioButton.Checked)
            {
                foreach (Book book in books)
                {
                    if (book.Title.ToLower() == removeTextBox.Text.ToLower())
                    {
                        books.Remove(book);
                        UpdateListBox();
                        break;
                    }
                }
            }

            Summary();
        }

        //search tab
        private void searchButton_Click(object sender, EventArgs e)
        {
            ISBN isbn = new ISBN(searchBookTextBox.Text);
            if (searchIsbnRadioButton.Checked)
            {
                foreach (Book book in books)
                {
                    if (book.Isbn.Normalize().Equals(isbn.Normalize()))
                    {
                        MessageBox.Show("Book found! \n" + ShowInfo(book), "Search Books",
                        MessageBoxButtons.OK,
                        MessageBoxIcon.Exclamation,
                        MessageBoxDefaultButton.Button1);
                        break;
                    }
                }
            }

            else  if (searchLastNameRadioButton.Checked)
            {
                foreach (Book book in books)
                {
                    if (book.LastName == searchBookTextBox.Text)
                    {
                        MessageBox.Show("Book found! \n" + ShowInfo(book), "Search Books",
                        MessageBoxButtons.OK);
                        break;
                    }
                }
            }

            else   if (searchTitleRadioButton.Checked)
            {
                foreach (Book book in books)
                {
                    if (book.Title == searchBookTextBox.Text)
                    {
                        MessageBox.Show("Book found! \n" + ShowInfo(book), "Search Books",
                        MessageBoxButtons.OK);
                    }
                }
            }
        }
        //for the search tab
        private string ShowInfo(Book book)
        {
            string summary = "";
            summary += "\n";
            summary += book.Isbn.ToString();
            summary += "\n";
            summary += book.LastName + " " + book.FirstName;
            summary += "\n";
            summary += book.Title;
            summary += "\n";
            summary += book.Year;
            summary += "\n";
            summary += book.Price;

            return summary;
        }
        //for the summary tab
        //change it to void
        //
        private void Summary()
        {
           if (books.Count() == 0)
            {
                return;
            }

           summaryTextBox.Text = "";
            summaryTextBox.Text += "Total Count: " + books.Count();
            summaryTextBox.Text += "\n";
            summaryTextBox.Text += "Total Cost: " + TotalCost();
            summaryTextBox.Text += "\n";
            summaryTextBox.Text += "Most Expensive" + MostExpensive();
            summaryTextBox.Text += "\n";
            summaryTextBox.Text += "Least Expensive" + LeastExpensive();
            summaryTextBox.Text += "\n";
            summaryTextBox.Text += "Newest Book: " + NewestBook();
            summaryTextBox.Text += "\n";
            summaryTextBox.Text += "Oldest Book" + OldestBook();
            return;
        }

        //total cost
        private double TotalCost()
        {
            double prices = books.First().Price;

            foreach (Book book in books)
            {
                if (prices < book.Price)
                {
                    prices = book.Price;
                }
            }
            return prices;
        }
        //most expensive book
        public double MostExpensive()
        {
            double price = books.First().Price;

            foreach (Book book in books)
            {
                if (price < book.Price)
                {
                    price = book.Price;
                }
            }
            return price;
        }
        //least expensive book
        public double LeastExpensive()
        {
            double price = books.First().Price;

            foreach (Book book in books)
            {
                if (price > book.Price)
                {
                    price = book.Price;
                }
            }
            return price;
        }

        //oldest book
        public int OldestBook()
        {
            int year = books.First().Year;

            foreach (Book book in books)
            {
                if (year > book.Year)
                {
                    year = book.Year;
                }
            }

            return year;
        }

        //newest book

        public int NewestBook()
        {
            int year = books.First().Year;

            foreach (Book book in books)
            {
                if (year < book.Year)
                {
                    year = book.Year;
                }
            }

            return year;
        }


    }
}