Adding event handlers to dynamically created controls

// keep track of CheckBoxes, and their Checked State
private List<checkbox> AllCheckBoxes = new List<checkbox>();

private List<checkbox> AllChecked = new List<checkbox>();

private List<checkbox> AllUnChecked = new List<checkbox>();

private CheckBox LastCBCheckedStateChanged;

public void AddCheckBoxes(Panel thePanel, int nCheckBoxes, List<string> cbText)
{
    for (int i = 0; i < nCheckBoxes; i++)
    {
        var newCheckBox = new CheckBox();

        AllCheckBoxes.Add(newCheckBox);

        newCheckBox.Text = cbText[i];
        newCheckBox.BackColor = Color.GhostWhite;
        newCheckBox.ForeColor = Color.Black;

        newCheckBox.CheckStateChanged += newCheckBox_CheckStateChanged;

        thePanel.Controls.Add(newCheckBox);
        newCheckBox.Location = new Point(20, (i * 40) + 20);
    }
}

// remove current EventHandler
private void RemoveEventHandler(EventHandler theHandler)
{
    foreach (CheckBox cbx in AllCheckBoxes)
    {
        cbx.CheckStateChanged -= theHandler;
    }
}

// reset current EventHandler
private void ResetEventHandler(EventHandler theHandler)
{
    foreach (CheckBox cbx in AllCheckBoxes)
    {
        cbx.CheckStateChanged += theHandler;
    }
}

private void newCheckBox_CheckStateChanged(object sender, EventArgs e)
{
    LastCBCheckedStateChanged = sender as CheckBox;

    AllChecked = AllCheckBoxes.Where(cbx => cbx.Checked).ToList();

    AllUnChecked = AllCheckBoxes.Where(cbx => ! cbx.Checked).ToList();

    // for testing only
    foreach (var cbx in AllChecked)
    {
        MessageBox.Show(string.Format("{0} is Checked", cbx.Text));
    }
}

// test
private void AddSomeCheckBoxes(object sender, EventArgs e)
{
    AddCheckBoxes(CBPanel,4, new List<string>{"cb 1", "cb 2", "cb 3", "cb 4"});

    // test removal of Event Handler
    RemoveEventHandler(newCheckBox_CheckStateChanged);

    // test restore EventHandler
    ResetEventHandler(newCheckBox_CheckStateChanged);
}