print the items of an array list in a textfile

Question

i create an array list and i want to print the content of the arraylist in a text file.

The programm take the values from the textboxes and store it in an arraylist and with the add button,i want to store it in the text file in given location..

i am using Microsoft Visual C# 2010 Express

namespace WindowsFormsApplication1
{
   public partial class Form1 : Form
   {

     private ArrayList StoreItems;


    public Form1()
    {
        this.StoreItems = new ArrayList();

        InitializeComponent();
    }

    private void textBox1_TextChanged(object sender, EventArgs e)
    {

    }
    private void textBox2_TextChanged(object sender, EventArgs e)
    {

    }
    private void textBox3_TextChanged(object sender, EventArgs e)
    {

    }
    private void textBox4_TextChanged(object sender, EventArgs e)
    {

    }
    private void textBox5_TextChanged(object sender, EventArgs e)
    {

    }
    private void textBox6_TextChanged(object sender, EventArgs e)
    {

    }


    //add button
    private void button1_Click(object sender, EventArgs e)
    {

        // Make sure an item is complete before adding it to the inventory
        if (this.textBox1.Text.Equals(""))
        {
            MessageBox.Show("You must enter a code");
            this.textBox1.Focus();
            return;
        }

        if (this.textBox2.Text.Equals(""))
        {
            MessageBox.Show("You must provide the name of the item");
            this.textBox2.Focus();
            return;
        }

        if (this.textBox3.Text.Equals(""))
        {
            MessageBox.Show("You must provide the name of the supplier");
            this.textBox3.Focus();
            return;
        }

        if (this.textBox4.Text.Equals(""))
        {
            MessageBox.Show("You must enter the price per unit");
            this.textBox4.Focus();
            return;
        }

        if (this.textBox5.Text.Equals(""))
        {
            MessageBox.Show("You must enter the number of the required products");
            this.textBox5.Focus();
            return;
        }

        if (this.textBox6.Text.Equals(""))
        {
            MessageBox.Show("You must enter the number of the current stock level");
            this.textBox6.Focus();
            return;
            //string csl = this.textBox6.Text;
        }



        string inValue1, inValue2, inValue3, inValue4, inValue5, inValue6;
        inValue1 = textBox1.Text;
        inValue2 = textBox2.Text;
        inValue3 = textBox3.Text;
        inValue4 = textBox4.Text;
        inValue5 = textBox5.Text;
        inValue6 = textBox6.Text;

      /*  string result = (inValue1 + " " + inValue2 + " " + inValue3 + " "
            + inValue4 + " " + inValue5 + " " + inValue6);  */

        string result=(inValue1+inValue2+inValue3+inValue4+inValue5                    +inValue6);
        StoreItems.Add(result);



        System.IO.File.AppendAllText(@"C:\Users\v\Desktop\text.txt", Environment.NewLine + result);

    }

    private void button2_Click(object sender, EventArgs e)
    {

    }

Answer 1

What version of .Net?

public Form1()
{
    InitializeComponent();

    private TextBox[] TextBoxes = {textBox1, textBox2, textBox3, textBox4, textBox5, textBox6};

    private List<string> storeItems = new List<string>();
}

private void button1_Click(object sender, EventArgs e)
{
    var buffer = new StringBuilder();
    foreach(var textBox in textBoxes)
    {
        if (string.IsNullOrEmpty(textBox.Text))
        {
            textBox.BackColor = Color.FromName("LightSalmon");
            MessageBox.Show("This item cannot be left blank");
            textBox.Focus();
            return;
        }
        textBox.BackColor = Colors.FromName("Window");
        buffer.Append(textBox.Text);
    }

    var result = buffer.ToString();
    storeItems.Add(result);
    System.IO.File.AppendAllText(@"C:\Users\v\Desktop\text.txt", Environment.NewLine + result);
}