var ibmp = SMath.Drawing.Graphics.Specifics.CreateBitmap(max_X, max_Y);
                var SF = 2.0f;

                enumerator = region.Parent.GetRegionsEnumerator();

                using (var g = SMath.Drawing.Graphics.Specifics.GraphicsFromBitmap(ibmp))
                {
                    g.Scale(SF);
                    // Filter out every invisible Region (no need to draw Regions hidden by Compacted Areas)
                    enumerator.FilterInvisible = true;

                    // Iterate through all available Regions one by one
                    while (enumerator.MoveNext())
                    {
                        if (!(enumerator.Current is SnapshotRegion) && enumerator.Current.Location.X < max_X && enumerator.Current.Location.Y - enumerator.CollapsedHeight < max_Y)
                        {
                            // Draws graphical representation of the worksheet Region (TopCorrection is the height of hidden by Compacted Area worksheet part above the Region)
                            var regionBMP = enumerator.Current.DrawToBitmapScaled();
                            var pt= new PointF(enumerator.Current.Location.X, enumerator.Current.Location.Y - enumerator.CollapsedHeight);
                            g.DrawImage(regionBMP, pt);

// ....