asp.net 产生随机颜色实现代码

public string getrandomcolor()
{
random randomnum_first = new random((int)datetime.now.ticks);
// 对于c#的随机数，没什么好说的
system.threading.thread.sleep(randomnum_first.next(50));
random randomnum_sencond = new random((int)datetime.now.ticks);

// 为了在白色背景上显示，尽量生成深色
int int_red = randomnum_first.next(256);
int int_green = randomnum_sencond.next(256);
int int_blue = (int_red + int_green > 400) ? 0 : 400 - int_red - int_green;
int_blue = (int_blue > 255) ? 255 : int_blue;

return color.fromargb(int_red, int_green, int_blue).name;
}