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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.

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);

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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