How do I read from a text file in one class and save it into to another class

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Hello there I am new at C#. what I have to do is to read text file and creat an object of Book class in one class and save all the book class objects in the Queue data structure in another class. I am not sure If I did right. Can anyone please help me. Please and thank you.

What I have tried:

Class to read from the text file

C#

public Queue<book> readBookData()
        {
               Queue<book> books = new Queue<book>();
               StreamReader sr = new StreamReader("Books.txt");
          
            string line = "";
            while((line = sr.ReadLine()) != null)
            {
                string[] words = line.Split(',');
                Book bk = new Book();
                bk.Author = words[0];
                bk.Book_Name = words[1];
                bk.Publisher = words[2];
                bk.Year = int.Parse(words[3]);
                bk.Category = words[4];

                books.Enqueue(bk);
            }
            return books;
        }

//-----------------------------------------------------------------------
// The data Structure class

        static Queue<book> books = new Queue<book>();
        public Queue<book> readBooks()
        {
            return books;
        }

        public void addBook(Book b)
        {
            books.Enqueue(b);
        }

        public Book removeBook()
        {
            return books.Dequeue();
        }

Posted 16-Nov-18 8:15am

Ron23111

Updated 16-Nov-18 22:09pm

RickZeeland

v2

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

RickZeeland · Answer 1 · 2018-11-16T22:09:00

Here is an example with all code in a Form, it would be cleaner though to split up the classes into separate files, this is also recommended by Microsoft.

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Windows.Forms;

namespace TestForm1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void buttonFill_Click(object sender, EventArgs e)
        {
            BooksHelper.Books = readBookData();
            Debug.Print("Total books = " + BooksHelper.Books.Count);
        }

        private void buttonSave_Click(object sender, EventArgs e)
        {
            AnotherBookClass.WriteAllBooks("books2.txt");
        }

        public Queue<Book> readBookData()
        {
            Queue<Book> books = new Queue<Book>();
            StreamReader sr = new StreamReader("Books.txt");
            string line = string.Empty;

            while ((line = sr.ReadLine()) != null)
            {
                string[] words = line.Split(',');
                Book bk = new Book();
                bk.Author = words[0];
                bk.Book_Name = words[1];
                bk.Publisher = words[2];
                bk.Year = int.Parse(words[3]);
                bk.Category = words[4];
                books.Enqueue(bk);
            }

            return books;
        }
    }  // Form1 class ends here.

    public class Book
    {
        public string Author { get; set; }
        public string Book_Name { get; set; }
        public string Publisher { get; set; }
        public int Year { get; set; }
        public string Category { get; set; }

        override public string ToString()
        {
            return Author + "," + Book_Name + "," + Publisher + "," + Year + "," + Category + Environment.NewLine;
        }
    }

    public static class BooksHelper
    {
        public static Queue<Book> Books = new Queue<Book>();
    }

    public static class AnotherBookClass
    {
        public static void WriteAllBooks(string fileName)
        {
            foreach (Book item in BooksHelper.Books)
            {
                File.AppendAllText(fileName, item.ToString());
            }
        }
    }
}

RickZeeland · Answer 2 · 2018-11-16T09:29:00

I would recommend using a List<>, something like this:

IList<Book> bookList = new List<Book>() { 
                new Book(){ ID=1, Author="Bill Gates"},
                new Book(){ ID=2, Author="Steve Jobs"},
                new Book(){ ID=3, Author="Ronald McDonald"},
                new Book(){ ID=4, Author="John Doe"}
            };

A List<> is more versatile than a Queue, you can Add, Insert and Delete etc.
Also see examples here: https://www.dotnetperls.com/initialize-list[^]

How do I read from a text file in one class and save it into to another class

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How do I read from a text file in one class and save it into to another class

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