private void button2_Click(object sender, EventArgs e) { List <float> wl = new List <float>(); wl = myMgr.GetWaveLength(ModLB.SelectedIndex); List <float> cnt = new List <float>(); cnt = myMgr.GetCount(ModLB.SelectedIndex); InitChart((int)cnt.Max()); if ((wl == null) || (cnt == null)) { MessageBox.Show("Error Getting Spectrum."); return; } UpdateChart(wl, cnt); }