private void Timer_Elapsed(object sender, ElapsedEventArgs e)
{
if (My.Count > 27)
{
My.RemoveAt(0);
}
//if the amount of letters exceeding the limit then we deleting the first occurence '
// regular case of using
My.Add(new KeyValuePair <char, int>(MyValue.First().Key, MyValue.First().Value));// change to collection values
MyValue.RemoveAt(0);
series.Dispatcher.BeginInvoke(new Action(() => {
series.ItemsSource = null;
series.InvalidateVisual();
series.ItemsSource = My;
BetterThanAnyGraph.InvalidateVisual();
}));
}