Graphics.DrawEllipse Method (Pen, RectangleF)

 

Draws an ellipse defined by a bounding RectangleF.

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

Public Sub DrawEllipse (
	pen As Pen,
	rect As RectangleF
)

Parameters

pen
Type: System.Drawing.Pen

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

rect
Type: System.Drawing.RectangleF

RectangleF 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 Sub DrawEllipseRectangleF(ByVal e As PaintEventArgs)

    ' Create pen.
    Dim blackPen As New Pen(Color.Black, 3)

    ' Create rectangle for ellipse.
    Dim rect As New RectangleF(0.0F, 0.0F, 200.0F, 100.0F)

    ' Draw ellipse to screen.
    e.Graphics.DrawEllipse(blackPen, rect)
End Sub

.NET Framework
Available since 1.1
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