Graphics.DrawLine Method (Pen, Point, Point)


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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


Type: System.Drawing.Pen

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

Type: System.Drawing.Point

Point structure that represents the first point to connect.

Type: System.Drawing.Point

Point structure that represents the second point to connect.

Exception Condition

pen is null.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, 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);

.NET Framework
Available since 1.1
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