/// <summary>
/// If SelectedIndexChanged current image in Panel is changed
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void IListBox_SelectedIndexChanged(object sender, EventArgs e)
{
indexer = IListBox.SelectedIndex == -1 ? 0 : IListBox.SelectedIndex;
string locale = PhotoList.File(IListBox.Items[indexer].ToString());
if (!string.IsNullOrWhiteSpace(locale))
{
Slider.BackgroundImage = Image.FromFile(locale);
}
}