How to: Fill Open Figures
You can fill a path by passing a GraphicsPath object to the FillPath method. The FillPath method fills the path according to the fill mode (alternate or winding) currently set for the path. If the path has any open figures, the path is filled as if those figures were closed. GDI+ closes a figure by drawing a straight line from its ending point to its starting point.
The following illustration shows the output of the example code. Note that the path is filled (according to Alternate) as if the open figure were closed by a straight line from its ending point to its starting point.
GraphicsPath path = new GraphicsPath(); // Add an open figure. path.AddArc(0, 0, 150, 120, 30, 120); // Add an intrinsically closed figure. path.AddEllipse(50, 50, 50, 100); Pen pen = new Pen(Color.FromArgb(128, 0, 0, 255), 5); SolidBrush brush = new SolidBrush(Color.Red); // The fill mode is FillMode.Alternate by default. e.Graphics.FillPath(brush, path); e.Graphics.DrawPath(pen, path);