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Graphics.DrawLine Method (Pen, Int32, Int32, Int32, Int32)

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,
	int x1,
	int y1,
	int x2,
	int y2
)

Parameters

pen
Type: System.Drawing.Pen

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

x1
Type: System.Int32

The x-coordinate of the first point.

y1
Type: System.Int32

The y-coordinate of the first point.

x2
Type: System.Int32

The x-coordinate of the second point.

y2
Type: System.Int32

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 DrawLineInt(PaintEventArgs e)
{

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

    // Create coordinates of points that define line. 
    int x1 = 100;
    int y1 = 100;
    int x2 = 500;
    int y2 = 100;

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

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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