/// <summary>
/// Update the shown buttons according to the search term.
/// </summary>
private void txtSearch_TextChanged(object sender, EventArgs e)
{
List <CmdButton> newList = new List <CmdButton>();
newList = CmdList.FindAll(btn => btn.Text.ToLower().Contains(txtSearch.Text.ToLower()));
flowCmdList.Controls.Clear();
foreach (CmdButton cmd in newList)
{
flowCmdList.Controls.Add(cmd);
}
}