VAGSuite.MapViewerEx.nChartControl1_MouseWheel C# (CSharp) Метод

        void nChartControl1_MouseWheel(object sender, MouseEventArgs e)
        {
            // wieltje wordt zoomin/out
            if (e.Delta > 0)
            {
                nChartControl1.Charts[0].Projection.Zoom += 5;
                nChartControl1.Refresh();
            }
            else
            {
                nChartControl1.Charts[0].Projection.Zoom -= 5;
                nChartControl1.Refresh();
            }
            //<GS-07062010>
            CastSurfaceGraphChangedEventEx(nChartControl1.Charts[0].Projection.XDepth, nChartControl1.Charts[0].Projection.YDepth, nChartControl1.Charts[0].Projection.Zoom, nChartControl1.Charts[0].Projection.Rotation, nChartControl1.Charts[0].Projection.Elevation);
        }