实现效果:

知识运用:
Timer组件 Lable控件的Left属性
实现代码:
private void button1_Click(object sender, EventArgs e)
{
bool validate = (button1.Text == "开始");
if (validate)
{
timer1.Start();
button1.Text = "暂停";
}
else { timer1.Stop(); button1.Text = "开始"; }
}
private void timer1_Tick(object sender, EventArgs e)
{
label1.Left -= 2;
if (label1.Left < 0)
label1.Left = this.Width;
}
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