public void Refresh()
{
var g = panel1.CreateGraphics();
g.Clear(panel1.BackColor);
foreach (var item in shapes)
{
if (item is rectangle)
{
rectangle r = (rectangle)item;
r.Draw(g);
}
else if (item is circle)
{
circle c = (circle)item;
c.Draw(g);
}
else if (item is ellipse)
{
ellipse e = (ellipse)item;
e.Draw(g);
}
else if (item is line)
{
line l = (line)item;
l.Draw(g);
}
else if (item is polygon)
{
polygon p = (polygon)item;
p.Draw(g);
}
}
}
public override object Clone()
{
var r = new rectangle();
r.x = x;
r.y = y;
r.width = width;
r.height = height;
r.thickness = thickness;
r.color = color;
r.fillcolor = fillcolor;
return(r);
}
private void button1_Click(object sender, EventArgs e)
{
rectangle r = new rectangle
{
x = 34,
y = 34,
width = 54,
height = 34,
thickness = 1,
color = Color.DarkCyan,
fillcolor = Color.Gainsboro,
};
propertyGrid1.SelectedObject = r;
shapes.Add(r);
Refresh();
}