Graphics.DrawLine Method (Pen, PointF, PointF)
.NET Framework (current version)
Draws a line connecting two PointF structures.
Assembly: System.Drawing (in System.Drawing.dll)
Parameters
- pen
-
Type:
System.Drawing.Pen
Pen that determines the color, width, and style of the line.
- pt1
-
Type:
System.Drawing.PointF
PointF structure that represents the first point to connect.
- pt2
-
Type:
System.Drawing.PointF
PointF structure that represents the second point to connect.
| Exception | Condition |
|---|---|
| ArgumentNullException | pen is null. |
This method draws a line connecting the two points specified by the pt1 and p2 parameters.
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 DrawLinePointF(PaintEventArgs e) { // Create pen. Pen blackPen = new Pen(Color.Black, 3); // Create points that define line. PointF point1 = new PointF(100.0F, 100.0F); PointF point2 = new PointF(500.0F, 100.0F); // Draw line to screen. e.Graphics.DrawLine(blackPen, point1, point2); }
.NET Framework
Available since 1.1
Available since 1.1
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