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Graphics.DrawRectangles Method (Pen, RectangleF[])

Draws a series of rectangles specified by RectangleF structures.

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

public void DrawRectangles(
	Pen pen,
	RectangleF[] rects


Type: System.Drawing.Pen
Pen that determines the color, width, and style of the outlines of the rectangles.
Type: System.Drawing.RectangleF[]
Array of RectangleF structures that represent the rectangles to draw.


pen is null.


rects is null.


rects is a zero-length array.

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

  • Creates a black pen.

  • Creates an array of three rectangles.

  • Draws the rectangles to the screen.

public void DrawRectanglesRectangleF(PaintEventArgs e)

    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);

    // Create array of rectangles.
    RectangleF[] rects =
                 new RectangleF( 0.0F,   0.0F, 100.0F, 200.0F),
                 new RectangleF(100.0F, 200.0F, 250.0F,  50.0F),
                 new RectangleF(300.0F,   0.0F,  50.0F, 100.0F)

    // Draw rectangles to screen.
    e.Graphics.DrawRectangles(blackPen, rects);

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.