SourceGrid.GridVirtual.OnRangePaint C# (CSharp) Method

        protected virtual void OnRangePaint(RangePaintEventArgs e)
        {
            Rectangle drawRectangle = RangeToRectangle(e.DrawingRange);

            System.Drawing.Drawing2D.GraphicsState state = e.GraphicsCache.Graphics.Save();

            try
            {
                e.GraphicsCache.Graphics.SetClip(drawRectangle);

                int top = drawRectangle.Top;
                int width;
                int height;
                for (int r = e.DrawingRange.Start.Row; r <= e.DrawingRange.End.Row; r++)
                {
                    height = Rows.GetHeight(r);

                    int left = drawRectangle.Left;
                    for (int c = e.DrawingRange.Start.Column; c <= e.DrawingRange.End.Column; c++)
                    {
                        width = Columns.GetWidth(c);

                        Position position = new Position(r, c);

                        Cells.ICellVirtual cell = GetCell(position);
                        if (cell != null)
                        {
                            CellContext cellContext = new CellContext(this, position, cell);
                            Rectangle drawRect = new Rectangle(left, top, width, height);

                            PaintCell(e.GraphicsCache, cellContext, drawRect);
                        }

                        left += width;
                    }

                    top += height;
                }

                //Draw the decorators
                foreach (SourceGrid.Decorators.DecoratorBase dec in Decorators)
                {
                    if (dec.IntersectWith(e.DrawingRange))
                        dec.Draw(e);
                }

                if (RangePaint != null)
                    RangePaint(this, e);
            }
            finally
            {
                e.GraphicsCache.Graphics.Restore(state);
            }
        }