To create a path, construct a GraphicsPath object, and then call methods, such as AddLine and AddCurve, to add primitives to the path.
The following example creates a path that has a single figure. The figure consists of a single arc. The arc has a sweep angle of 180 degrees, which is counterclockwise in the default coordinate system.
Dim path As New GraphicsPath()
path.AddArc(175, 50, 50, 50, 0, - 180)
e.Graphics.DrawPath(New Pen(Color.FromArgb(128, 255, 0, 0), 4), path)
[C#]
GraphicsPath path = new GraphicsPath();
path.AddArc(175, 50, 50, 50, 0, -180);
e.Graphics.DrawPath(new Pen(Color.FromArgb(128, 255, 0, 0), 4), path);
The following example creates a path that has two figures. The first figure is an arc followed by a line. The second figure is a line followed by a curve followed by a line. The first figure is left open, and the second figure is closed.
' Create an array of points for the curve in the second figure.
Dim points As Point() = { _
New Point(40, 60), _
New Point(50, 70), _
New Point(30, 90)}
Dim path As New GraphicsPath()
path.StartFigure() ' Start the first figure.
path.AddArc(175, 50, 50, 50, 0, - 180)
path.AddLine(100, 0, 250, 20)
' First figure is not closed.
path.StartFigure() ' Start the second figure.
path.AddLine(50, 20, 5, 90)
path.AddCurve(points, 3)
path.AddLine(50, 150, 150, 180)
path.CloseFigure() ' Second figure is closed.
e.Graphics.DrawPath(New Pen(Color.FromArgb(255, 255, 0, 0), 2), path)
[C#]
// Create an array of points for the curve in the second figure.
Point[] points = {
new Point(40, 60),
new Point(50, 70),
new Point(30, 90)};
GraphicsPath path = new GraphicsPath();
path.StartFigure(); // Start the first figure.
path.AddArc(175, 50, 50, 50, 0, -180);
path.AddLine(100, 0, 250, 20);
// First figure is not closed.
path.StartFigure(); // Start the second figure.
path.AddLine(50, 20, 5, 90);
path.AddCurve(points, 3);
path.AddLine(50, 150, 150, 180);
path.CloseFigure(); // Second figure is closed.
e.Graphics.DrawPath(new Pen(Color.FromArgb(255, 255, 0, 0), 2), path);