Random r = new Random();
Color c = Color.FromArgb(r.Next(0, 256), r.Next(0, 256), r.Next(0, 256), r.Next(0, 256));
picutreBox1.BackColor = c;
[/Quote]
+1
Random r = new Random();
Color c = Color.FromArgb(r.Next(0, 256), r.Next(0, 256), r.Next(0, 256), r.Next(0, 256));
picutreBox1.BackColor = c;
[/Quote]这种方式可行