WP7中的計數器Silverlight應用程序

Question

我正在寫C＃silverlight中的掃雷遊戲。
1.如何在此應用程序中添加計數器（僅計秒）？
2.應用程序進入後臺（中間按鈕，搜索按鈕，來電等）時如何停止計數器？
3. WP7正在關閉我的申請流程時，我該怎麼做？例如，將當前遊戲保存到獨立存儲。

Answer 1

1）您需要使用Timer

 timer.Tick += new EventHandler(timer_Tick); // Everytime timer ticks, timer_Tick will be called 
     timer.Interval = (1000) * (10);    // Timer will tick evert 10 seconds 
     timer.Enabled = true;      // Enable the timer 
     timer.Start();        // Start the time 

void timer_Tick(object sender, EventArgs e) 
     { 
      //Do something 
     } 

2）您需要處理OnNavigatedFrom事件：

private void Application_Deactivated(object sender, DeactivatedEventArgs e) 
{ 
    //Do something 
} 

3）在這裏，你有一個4個有用的事件：

// Code to execute when the application is launching (eg, from Start) 
// This code will not execute when the application is reactivated 
private void Application_Launching(object sender, LaunchingEventArgs e) 
{ 
    //Do something 
} 

// Code to execute when the application is activated (brought to foreground) 
// This code will not execute when the application is first launched 
private void Application_Activated(object sender, ActivatedEventArgs e) 
{ 
    //Do something 
} 

// Code to execute when the application is deactivated (sent to background) 
// This code will not execute when the application is closing 
private void Application_Deactivated(object sender, DeactivatedEventArgs e) 
{ 
    //Do something 
} 

// Code to execute when the application is closing (eg, user hit Back) 
// This code will not execute when the application is deactivated 
private void Application_Closing(object sender, ClosingEventArgs e) 
{ 
    //Do something 
} 

在這裏你可以閱讀更多關於處理這個事件：http://msdn.microsoft.com/en-us/library/hh821027.aspx