VAGSuite.MapViewerEx.chartControl1_MouseMove C# (CSharp) Метод

        private void chartControl1_MouseMove(object sender, MouseEventArgs e)
        {
            /*if (m_isDragging)
            {
                int delta_y = e.Y - _mouse_drag_y;
                if (Math.Abs(delta_y) > 0)//be able to hover!
                {
                    _mouse_drag_y = e.Y;
                    _mouse_drag_x = e.X;

                    double yaxissize = (double)((XYDiagram)chartControl1.Diagram).AxisY.Range.MaxValue - (double)((XYDiagram)chartControl1.Diagram).AxisY.Range.MinValue;

                    double yaxissizepxls = chartControl1.Height - (((XYDiagram)chartControl1.Diagram).Padding.Top + ((XYDiagram)chartControl1.Diagram).Padding.Bottom) - (chartControl1.Margin.Top + chartControl1.Margin.Bottom);
                    yaxissizepxls -= 64;//(yaxissizepxls / 6);
                    //chartControl1.d
                    double deltavalue = delta_y * (yaxissize / yaxissizepxls);
                    //deltavalue -= correction_offset;
                    //deltavalue *= 1 / correction_factor;
                    //Console.WriteLine("Delta: " + deltavalue.ToString());
                    if (_sp_dragging != null)
                    {
                        double curval = Convert.ToDouble(_sp_dragging.Values.GetValue(0));
                        double newvalue = (curval - deltavalue);
                        // if (newvalue < 0) newvalue = 0;
                        //Console.WriteLine("Current: " + curval.ToString() + " delta: " + deltavalue.ToString() + " new: " + newvalue.ToString());
                        _sp_dragging.Values.SetValue(newvalue, 0);
                        DataTable dt = (DataTable)chartControl1.DataSource;
                        foreach (DataRow dr in dt.Rows)
                        {
                            if (dr[0].ToString() == _sp_dragging.Argument)
                            {
                                dr[1] = newvalue;
                                // zet ook de betreffende waarde in de tabel!
                                SetDataValueInMap(_sp_dragging.Argument, newvalue);
                                //Console.WriteLine("Written: " + _sp_dragging.Argument + " : " + newvalue);
                                //sp.Values.SetValue(curval - 1, 0);
                                //chartControl1.Invalidate();
                            }
                        }

                    }
                }
            }*/
        }