protected virtual void OnListHeaderStateChanged(ListHeaderStateChangedEventArgs e)
{
if (ListHeaderStateChanged != null)
{
ListHeaderStateChanged(this, e);
}
}
// Handle the change in the list.
private void header_ListHeaderStateChanged(object sender, ListHeaderStateChangedEventArgs e)
{
var header = (ListHeader)sender;
Control c = this.flowLayoutPanel1.Controls[(string)header.Tag];
if (e.State == ListHeaderState.Collapsed)
{
c.Hide();
}
else
{
c.Show();
}
}