private void drawingOptionsToolStripMenuItem_Click(object sender, EventArgs e) { Debug.Assert(graphic.Series.Count == 1); DrawingOptionsWindow w = new DrawingOptionsWindow(); w.LineColor = drawingOptions.LineColor; w.Points = drawingOptions.IsPoints; if (w.ShowDialog() == DialogResult.OK) { drawingOptions.LineColor = w.LineColor; drawingOptions.IsPoints = w.Points; InitializeDrawingOptions(graphic.Series[0]); } }