帶狀態標籤c中的倒數計時器＃

Question

我的程序有一個參數，用於啓動winform並等待x運行函數之前的秒數。目前，我正在使用線程睡眠功能x秒，然後運行該功能。如何在條狀態標籤中添加一個定時器？

所以，它說：x Seconds Remaining...

Answer 1

而是阻塞線程執行的，簡單的調用方法時，需要超時通過。將新的Timer添加到您的表單中，並將它的間隔設置爲1000。然後訂閱計時器的Tick事件和事件處理程序計算經過時間：

private int secondsToWait = 42; 
private DateTime startTime; 

private void button_Click(object sender, EventArgs e) 
{ 
    timer.Start(); // start timer (you can do it on form load, if you need) 
    startTime = DateTime.Now; // and remember start time 
} 

private void timer_Tick(object sender, EventArgs e) 
{ 
    int elapsedSeconds = (int)(DateTime.Now - startTime).TotalSeconds; 
    int remainingSeconds = secondsToWait - elapsedSeconds; 

    if (remainingSeconds <= 0) 
    { 
     // run your function 
     timer.Stop(); 
    } 

    toolStripStatusLabel.Text = 
     String.Format("{0} seconds remaining...", remainingSeconds); 
} 

Answer 2

你可以使用一個Timer：

public class Form1 : Form { 
    public Form1(){ 
     InitializeComponent(); 
     t = new Timer {Interval = 1000}; 
     t.Tick += Tick; 
     //try counting down the time 
     CountDown(100); 
    } 
    DateTime start; 
    Timer t; 
    long s; 
    public void CountDown(long seconds){ 
     start = DateTime.Now; 
     s = seconds; 
     t.Start(); 
    } 
    private void Tick(object sender, EventArgs e){ 
     long remainingSeconds = s - (DateTime.Now - start).TotalSeconds; 
     if(remainingSeconds <= 0) { 
     t.Stop(); 
     toolStripStatusLabel1.Text = "Done!"; 
     return; 
     } 
     toolStripStatusLabel1.Text = string.Format("{0} seconds remaining...", remainingSeconds); 
    } 
}