哪位兄弟能够给出一个在WinForm上画一个圆的例子，谢谢！

[sfanpu]

rt，忙了半天都没有画出来，郁闷……

[copico]

public 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);
}

[VirtualDesktop]

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
this.Paint += new PaintEventHandler(Form1_Paint);

}

void Form1_Paint(object sender, PaintEventArgs e)
{
//throw new Exception("The method or operation is not implemented.");
Pen pn = new Pen(Brushes.Black);
Rectangle rc = new Rectangle(0, 0, 100, 100);
Graphics g = e.Graphics;
g.DrawEllipse(pn, rc);
pn.Dispose();
g.Dispose();
}









}

[GXY2005]

private void button1_Click(object sender, System.EventArgs e)
{

Graphics g = this.CreateGraphics();
Pen blackPen = new Pen(Color.Black, 3);

g.DrawEllipse(blackPen, new Rectangle(100, 100, 50, 50));
}