Question

C#2008 求高手编一段小程序，急求，分多多

http://zhidao.baidu.com/question/155601668.html

Answer 1

你在一个窗体上，拖两个按钮 一个timer

private void Form4_Load(object sender, EventArgs e)
{
timer1.Enabled = true;
timer1.Interval = 1000;
timer1.Start();

}
int num = 0;
private void timer1_Tick(object sender, EventArgs e)
{
num++;
if (num % 5 == 0)
{
button1.Visible = false;

}

if (num % 20 == 0)
{
button2.Visible = true;
}

if (num % 25 == 0)
{
button1.Visible = true;
button2.Visible = false;
}

}