Listbox items in sync with other listbox items

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C#

I have 3 listBox each have an input from 3 textBox, I want them to stay in sync with each other. so the 3 listBoxes are side by side, I want the items in each to correlate to each other even it I remove, alphabetize, I do have the add working in this part. If I remove from groceryListBox I want the price and quantity to be removed as well.

Not sure I can explain it any better, if I could only add screen shot.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using GroceryList.Properties;

namespace GroceryList
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void addButton_Click(object sender, EventArgs e)
        {
            if (itemTextBox.Text == "")
                MessageBox.Show("Please enter an item to add");
            else
            groceryListBox.Items.Add(itemTextBox.Text);
            itemTextBox.Clear();
            countTextBox.Text = groceryListBox.Items.Count.ToString();

            if (quanityTextBox.Text == "")
                quanityListBox.Items.Add("---------------");
            else
                quanityListBox.Items.Add(quanityTextBox.Text);
            quanityTextBox.Clear();
            // countTextBox.Text = quanityListBox.Items.Count.ToString();

            if (priceTextBox.Text == "")
                priceListBox.Items.Add("--------------------");
            else
                priceListBox.Items.Add(priceTextBox.Text);
            priceTextBox.Clear();
            //countTextBox.Text = priceListBox.Items.Count.ToString();
            itemTextBox.Focus();
        }

        private void removeSingleButton_Click(object sender, EventArgs e)
        {
            if (groceryListBox.SelectedIndex != -1)
            {
                while(groceryListBox.SelectedItems.Count != 0)
                {
                    groceryListBox.Items.Remove(groceryListBox.SelectedItems[0]);
                }
            }
            else
            {
                MessageBox.Show("Please Select an item(s) to remove");
            }
        }

        private void saveButton_Click(object sender, EventArgs e)
        {
          Settings.Default["List1"] = groceryListBox.Items.ToString();
            Settings.Default.Save();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            groceryListBox.Text = Settings.Default["List1"].ToString();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            groceryListBox.Items.Clear();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            groceryListBox.SelectedItems.Clear();
            for (int i = groceryListBox.Items.Count - 1; i >= 0; i--)
                if (groceryListBox.Items[i].ToString().ToLower().Equals(searchTextBox.Text.ToLower()))
                    groceryListBox.SetSelected(i, true);
        }

        private void colorButton_Click(object sender, EventArgs e)
        {
            groceryListBox.BackColor = Color.DeepSkyBlue;
        }

        private void containsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            {
                groceryListBox.SelectedItems.Clear();
                for (int i = groceryListBox.Items.Count - 1; i >= 0; i--)
                    if (groceryListBox.Items[i].ToString().ToLower().Contains(searchTextBox.Text.ToLower()))
                        groceryListBox.SetSelected(i, true);
            }
        }

        private void startsWithToolStripMenuItem_Click(object sender, EventArgs e)
        {
            {
                groceryListBox.SelectedItems.Clear();
                for (int i = groceryListBox.Items.Count - 1; i >= 0; i--)
                    if (groceryListBox.Items[i].ToString().ToLower().StartsWith(searchTextBox.Text.ToLower()))
                        groceryListBox.SetSelected(i, true);
            }
        }

        private void editToolStripMenuItem_Click(object sender, EventArgs e)
        {
            editTextBox.Text = groceryListBox.SelectedItem.ToString();
        }

        private void pasteToolStripMenuItem_Click(object sender, EventArgs e)
        {
            editTextBox.Paste();
        }

        private void toolsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (editTextBox.Text == "")
                MessageBox.Show("Please enter an item to add");
            else
                groceryListBox.Items[groceryListBox.SelectedIndex] = editTextBox.Text;
            editTextBox.Clear();
            countTextBox.Text = groceryListBox.Items.Count.ToString();
        }
    }
}

What I have tried:

I have tried the reverse of the add_Button, but that didn't even compile.