private void btnRemoveHistoricalItem_Click(object sender, RoutedEventArgs e)
{
if (SelectedHistoricalData != null && SelectedHistoricalData.Count > 0)
{
for (int i = SelectedHistoricalData.Count - 1; i >= 0; i--)
{
for (int j = HistoricalData.Count - 1; j >= 0; j--)
{
if (HistoricalData[j] == SelectedHistoricalData[i])
{
HistoricalData.RemoveAt(j);
break;
}
}
}
SelectedHistoricalData = null;
}
}