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Graphics.DrawPolygon Method (Pen, PointF[])

Draws a polygon defined by an array of PointF structures.

Namespace: System.Drawing
Assembly: System.Drawing (in system.drawing.dll)

public void DrawPolygon (
	Pen pen,
	PointF[] points
)
public void DrawPolygon (
	Pen pen, 
	PointF[] points
)
public function DrawPolygon (
	pen : Pen, 
	points : PointF[]
)
Not applicable.

Parameters

pen

Pen that determines the color, width, and style of the polygon.

points

Array of PointF structures that represent the vertices of the polygon.

Exception typeCondition

ArgumentNullException

pen is a null reference (Nothing in Visual Basic).

-or-

points is a null reference (Nothing in Visual Basic).

Every pair of two consecutive points in the array specifies a side of the polygon. In addition, if the last point and the first of the array point do not coincide, they specify the last side of the polygon.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. The code performs the following actions:

  • Creates a black pen.

  • Creates an array of seven points for the vertices of the polygon.

  • Draws the polygon to the screen.

public void DrawPolygonPointF(PaintEventArgs e)
{
             
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);
             
    // Create points that define polygon.
    PointF point1 = new PointF(50.0F,  50.0F);
    PointF point2 = new PointF(100.0F,  25.0F);
    PointF point3 = new PointF(200.0F,   5.0F);
    PointF point4 = new PointF(250.0F,  50.0F);
    PointF point5 = new PointF(300.0F, 100.0F);
    PointF point6 = new PointF(350.0F, 200.0F);
    PointF point7 = new PointF(250.0F, 250.0F);
    PointF[] curvePoints =
             {
                 point1,
                 point2,
                 point3,
                 point4,
                 point5,
                 point6,
                 point7
             };
             
    // Draw polygon curve to screen.
    e.Graphics.DrawPolygon(blackPen, curvePoints);
}

public void DrawPolygonPointF(PaintEventArgs e) 
{
    // Create pen.
    Pen blackPen =  new Pen(Color.get_Black(), 3);

    // Create points that define polygon.
    PointF point1 =  new PointF(50, 50);
    PointF point2 =  new PointF(100, 25);
    PointF point3 =  new PointF(200, 5);
    PointF point4 =  new PointF(250, 50);
    PointF point5 =  new PointF(300, 100);
    PointF point6 =  new PointF(350, 200);
    PointF point7 =  new PointF(250, 250);
    PointF curvePoints[] =  { point1, point2, point3, point4, point5, 
                            point6, point7};

    // Draw polygon curve to screen.
    e.get_Graphics().DrawPolygon(blackPen, curvePoints);
} //DrawPolygonPointF

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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