private void ClearAndLoadItems()
{
listBox1.Items.Clear();
var allsaved = JsonSerialization.DeSerializeAndLoadAll <Person>();
var allsaved2 = JsonSerialization.DeSerializeAndLoadAll <Booking>();
if (allsaved != null)
{
foreach (var item in allsaved)
{
listBox1.Items.Add(item.FirstName);
}
}
if (allsaved2 != null)
{
foreach (var item in allsaved2)
{
listBox1.Items.Add(item.Title);
}
}
}