为标签添加动态时间

Question

I have a label in my grid

<Label Name="time"  Grid.Column="5" Grid.Row="1"   />

And then

 time.Content = DateTime.Now.ToString();

But it's static.

How can I make the time label update to represent the actual time?

Answer 1

On the constructor of your page :

DispatcherTimer messageTimer = new DispatcherTimer(); 
messageTimer.Tick += new EventHandler(messageTimer_Tick); 
messageTimer.Interval = new TimeSpan(0, 0, 1); 
messageTimer.Start();

and the messageTimer_Tick :

void messageTimer_Tick(object sender, EventArgs e)
{
    time.Content = DateTime.Now.ToString();
}

Answer 2

您必须在页面上添加Timer控件，每隔一秒就会更新GridView

Answer 3

public Timer()
{
        timer.Tick += new EventHandler(timer_Tick); // Everytime timer ticks, timer_Tick will be called
        timer.Interval = (1000) * (1);              // Timer will tick evert second
        timer.Enabled = true;                       // Enable the timer
        timer.Start();                              // Start the timer
}

Now every second the event will be launched and the following EventHandler will generate the current date and set this as the value of time.Content, which will cause the dynamic effect.

void timer_Tick(object sender, EventArgs e)
{
        time.Content = DateTime.Now.ToString();
}