private void btnDrawChannel_Click(object sender, EventArgs e)
{
Drawing.DrawChannel(chrtMain, lstFavorites.Find(x => x.Name == lbFavorites.SelectedItem.ToString()), intSelectedPeriod);
}
private void lbFavorites_SelectedIndexChanged(object sender, EventArgs e)
{
ListBox lb = (ListBox)sender;
Drawing.DrawChart(chrtMain, lstFavorites.Find(x => x.Name == lb.SelectedItem.ToString()), intSelectedPeriod);
}