System.Drawing.Graphics.RectanglePath C# (CSharp) Method

        void RectanglePath(RectangleF rectangle)
        {
            MoveTo (rectangle.Location);
            context.AddRect(rectangle.ToCGRect ());
            context.ClosePath();
        }

 internal virtual void FillRect(Graphics graphics, CGRect rect)
 {
     // Use path by default, because this is how the default implementation works.
     // Some brushes override this to improve performance (SolidBrush, LinearGradientBrush)
     graphics.RectanglePath(rect);
     FillPath(graphics);
 }