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Graphics.DrawLine Method (Pen, Single, Single, Single, Single)

Draws a line connecting the two points specified by the coordinate pairs.

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

public void DrawLine(
	Pen pen,
	float x1,
	float y1,
	float x2,
	float y2
)

Parameters

pen
Type: System.Drawing.Pen

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

x1
Type: System.Single

The x-coordinate of the first point.

y1
Type: System.Single

The y-coordinate of the first point.

x2
Type: System.Single

The x-coordinate of the second point.

y2
Type: System.Single

The y-coordinate of the second point.

ExceptionCondition
ArgumentNullException

pen is null.

This method draws a line connecting the two points specified by the x1, y1, x2, and y2 parameters.

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 the coordinates of the endpoints of the line.

  • Draws the line to the screen.

public void DrawLineFloat(PaintEventArgs e)
{

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

    // Create coordinates of points that define line. 
    float x1 = 100.0F;
    float y1 = 100.0F;
    float x2 = 500.0F;
    float y2 = 100.0F;

    // Draw line to screen.
    e.Graphics.DrawLine(blackPen, x1, y1, x2, y2);
}

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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