Question

i have a new question. i have a code to load a list from binary file, i think i did it right but i need to make each variable show in its own text box. this is the ting i cannot find out how to do. can anyone help me or point me to where i can find the information?

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;
using System.Runtime.Serialization.Formatters.Binary;

namespace test
 {

public partial class Form1 : Form
{
    [Serializable]
    public class ore
    {
        public float Titan;
        public float Eperton;
    }
    ore b1 = null;
    ore b2 = null;



    public Form1()
    {
        InitializeComponent();

        b2 = new ore();
        b1 = new ore();
    }

    private void textBox1_TextChanged(object sender, EventArgs e)
    {

        float tempFloat;


        if (float.TryParse(textBox1.Text, out tempFloat))
        {
            b1.Titan = tempFloat;
        }
        else
            MessageBox.Show("uh oh");



    }


    private void textBox2_TextChanged(object sender, EventArgs e)
    {
        float tempFloat;
        if (float.TryParse(textBox1.Text, out tempFloat))
        {
            b2.Eperton = tempFloat;
        }
        else
            MessageBox.Show("uh oh");


    }


    private void button1_Click(object sender, EventArgs e)
    {
        List<ore> oreData = new List<ore>();
        oreData.Add(b1);
        oreData.Add(b2);

        FileStream fs = new FileStream("ore.dat", FileMode.Create);
        BinaryFormatter bf = new BinaryFormatter();
        bf.Serialize(fs, oreData);
        fs.Close();
    }

    private void textBox3_TextChanged(object sender, EventArgs e)
    {

    }

    private void textBox4_TextChanged(object sender, EventArgs e)
    {

    }

    List<ore> books = new List<ore>();
    private void button2_Click(object sender, EventArgs e)
    {
        FileStream fs = new FileStream("ore.dat", FileMode.Open);
        BinaryFormatter bf = new BinaryFormatter();
        List<ore> books = (List<ore>)bf.Deserialize(fs);
        fs.Close();

        if (books.Count > 1)
        {
            textBox3.Text = books[0];//update the first text
            textBox4.Text = books[1];//update the second text
        }
    }
}

}

Answer 1

Windows Forms:

1- Define your List books at class level so you can use it in another methods if needed..

2-

public clas MyForm : Form
{
    List<ore> books = new List<ore>();//define at the class scope

    private void button2_Click(object sender, EventArgs e)
    {
        FileStream fs = new FileStream("ore.dat", FileMode.Open);
        BinaryFormatter bf = new BinaryFormatter();
        books = (List<ore>)bf.Deserialize(fs);
        fs.Close();

        if (books.Count > 1)
        {
            textBox3.Text = books[0];//update the first text
            textBox4.Text = books[1];//update the second text
        }
    } 
}

If you need collection of list boxes to be added and removed whenever a book list changes then this is another story… write a comment or update your question…