Graphics.DrawEllipse Method (Pen, Single, Single, Single, Single)

 

Draws an ellipse defined by a bounding rectangle specified by a pair of coordinates, a height, and a width.

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

public void DrawEllipse(
	Pen pen,
	float x,
	float y,
	float width,
	float height
)

Parameters

pen
Type: System.Drawing.Pen

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

x
Type: System.Single

The x-coordinate of the upper-left corner of the bounding rectangle that defines the ellipse.

y
Type: System.Single

The y-coordinate of the upper-left corner of the bounding rectangle that defines the ellipse.

width
Type: System.Single

Width of the bounding rectangle that defines the ellipse.

height
Type: System.Single

Height of the bounding rectangle that defines the ellipse.

Exception Condition
ArgumentNullException

pen is null.

This method draws an ellipse that is defined by the bounding rectangle described by the x, y, width, and height 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 the position and size of a rectangle to bound an ellipse.

  • Draws the ellipse to the screen.

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

    // Create location and size of ellipse.
    float x = 0.0F;
    float y = 0.0F;
    float width = 200.0F;
    float height = 100.0F;

    // Draw ellipse to screen.
    e.Graphics.DrawEllipse(blackPen, x, y, width, height);
}

.NET Framework
Available since 1.1
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