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Graphics.DrawLine Method (Pen, Point, Point)

Draws a line connecting two Point structures.

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

public void DrawLine(
	Pen pen,
	Point pt1,
	Point pt2
)

Parameters

pen
Type: System.Drawing.Pen

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

pt1
Type: System.Drawing.Point

Point structure that represents the first point to connect.

pt2
Type: System.Drawing.Point

Point structure that represents the second point to connect.

ExceptionCondition
ArgumentNullException

pen 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 points for the endpoints of the line.

  • Draws the line to the screen.

public void DrawLinePoint(PaintEventArgs e)
{

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

    // Create points that define line.
    Point point1 = new Point(100, 100);
    Point point2 = new Point(500, 100);

    // Draw line to screen.
    e.Graphics.DrawLine(blackPen, point1, point2);
}

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

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