foreach (CurveItem item in zedGraphControlCurve.GraphPane.CurveList)
                {
                    LineItem line = (LineItem)item;
                    line.Line.Width = Convert.ToSingle(numericUpDownLineWidth.Value);
                    if (cboxSmooth.Checked)
                    {
                        line.Line.IsSmooth = true;
                    }
                    else
                    {
                        line.Line.IsSmooth = false;
                    }
                    line.IsSelectable = true;
                }