How to Reload a Window Form

List<string> lst = new List<string>();
private void Form1_Load(object sender, EventArgs e)
{
    foreach (Control ctrl in this.Controls)
    {
        if (ctrl is TextBox)
        {
            lst.Add(((TextBox)ctrl).Text);
        }
    }
}

private void button1_Click(object sender, EventArgs e)
{
    int i = 0;
    foreach (Control ctrl in this.Controls)
    {
        if (ctrl is TextBox)
        {

            ((TextBox)ctrl).Text = lst[i];
            i++;
        }
    }
}