Question

用C#窗体怎样在点击一个按钮的时候产生一个10以内随机数且前后不重复，急！谢谢！！

Answer 1

private List<int> check = new List<int>(10); //全局变量 验证是否重复
private void button1_Click(object sender, EventArgs e)
{
Random r = new Random();
int randomNum = 0;
while (check.Count<10)
{
randomNum = r.Next(11);
if (check.Count == 0)
{
check.Add(randomNum);
break;
}
else if (!check.Contains(randomNum))
{
check.Add(randomNum);
break;
}
else
{
continue;
}
}
textBox1.AppendText(randomNum.ToString());
}
}

Answer 2

Random rd = new Random();
int num = rd.Next(1, 11);