Graphics.DrawEllipse Method (Pen, Rectangle)

 

Draws an ellipse specified by a bounding Rectangle structure.

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

public void DrawEllipse(
	Pen pen,
	Rectangle rect
)

Parameters

pen
Type: System.Drawing.Pen

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

rect
Type: System.Drawing.Rectangle

Rectangle structure that defines the boundaries of the ellipse.

Exception Condition
ArgumentNullException

pen is null.

This method draws an ellipse that is defined by the bounding rectangle specified by the rect parameter.

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 a rectangle to bound an ellipse.

  • Draws the ellipse to the screen.

private void DrawEllipseRectangle(PaintEventArgs e)
{
    // Create pen.
    Pen blackPen = new Pen(Color.Black, 3);

    // Create rectangle for ellipse.
    Rectangle rect = new Rectangle(0, 0, 200, 100);

    // Draw ellipse to screen.
    e.Graphics.DrawEllipse(blackPen, rect);
}

.NET Framework
Available since 1.1
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