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);
}
}
}
private void button5_Click(object sender, EventArgs e)
{
polygon p = new polygon
{
x = 50,
y = 50,
x2 = 34,
y2 = 23,
x3 = 45,
y3 = 54,
x4 = 56,
y4 = 65,
x5 = 67,
y5 = 76,
thickness = 1,
color = Color.SandyBrown,
fillcolor = Color.BlueViolet,
};
propertyGrid1.SelectedObject = p;
shapes.Add(p);
Refresh();
}