标签页面

    <Label Width="800" Height="80" Background="Black" VerticalAlignment="Top"></Label><Label Width="360" Height="40"HorizontalAlignment="Left" VerticalAlignment="Top"Content="我叫奕泽你记住，天悦小学我最帅！！！" Foreground="Red" FontSize="20"Margin="-360,20,0,0"Name="l1"
></Label><Button  Width="200" Height="40" Content="点击移动label"  Click="Button_Click"></Button>

代码界面

定时器函数 bject? sender ；
如果object有的话才去取这个数据，如果这个数据为null 就不取

 double step = 2; // 每次移动的步距private void Timer_Tick(object? sender, EventArgs e){//if (this.l1.Margin.Left > 800 )//{//    step = -1;//}//if(this.l1.Margin.Left < -200)//{//    step = 1;//}if (this.l1.Margin.Left > 800 || this.l1.Margin.Left < -360){step = -step;}//修改lable的外边距//Thickness 设置外边距的//this.l1.Margin.Right 有外边距，this.l1.Margin = new Thickness(this.l1.Margin.Left + step,this.l1.Margin.Top, this.l1.Margin.Right, this.l1.Margin.Bottom);}

点击开始移动label 开启定时器

private void Button_Click(object sender, RoutedEventArgs e)
{timer.Start(); // 开启定时器
}

 

timer.Interval = TimeSpan.FromMilliseconds(10); //500ms
timer.Tick += Timer_Tick;