/// <summary>
/// Sort all buttons from a to z or reversed.
/// </summary>
private void btnSort_Click(object sender, EventArgs e)
{
sortAlphabetic = !sortAlphabetic;
Image newImage;
if (sortAlphabetic == true)
{
CmdList = CmdList.OrderBy(a => a.Text).ToList();
newImage = Properties.Resources.sort_az;
}
else
{
CmdList = CmdList.OrderByDescending(a => a.Text).ToList();
newImage = Properties.Resources.sort_za;
}
flowCmdList.Controls.Clear();
// refill flowLayoutPanel
foreach (CmdButton c in CmdList)
{
flowCmdList.Controls.Add(c);
}
Button b = sender as Button;
b.BackgroundImage = newImage;
}