如何在一個標籤中顯示三個文本框的時間？

Question

private void timer_click1(object sender, RoutedEventArgs e) 
{ 
    seconds = seconds - 1; 
    if (seconds == -1) 
    { 
     minutes = minutes - 1; 
     seconds = 59; 
    } 
    if (minutes == -1) 
    { 
     hours = hours - 1; 
     minutes = 59; 
    } 
    if (hours == 0 && minutes == 0 && seconds == 0) 
    { 
     timer.Stop(); 
    } 
    string hhr = Convert.ToString(hours); 
    string minns = Convert.ToString(minutes); 
    string seccs = Convert.ToString(seconds); 
} 

我正在嘗試創建一個倒數計時器。我被hhr，minns和seccs卡住了，因爲我不得不在一個標籤中顯示倒計時。我如何將這三個文本傳遞爲hrr：minns：seccs？

Answer 1

可能有更好的方法來獲得剩餘的時間，但這裏是你如何可以使用string.Format方法單一string顯示所有三個組成部分：

private void timer_click1(object sender, RoutedEventArgs e) 
{ 
    seconds = seconds - 1; 
    if (seconds == -1) 
    { 
     minutes = minutes - 1; 
     seconds = 59; 
    } 
    if (minutes == -1) 
    { 
     hours = hours - 1; 
     minutes = 59; 
    } 
    if (hours == 0 && minutes == 0 && seconds == 0) 
    { 
     timer.Stop(); 
    } 
    string hhr = Convert.ToString(hours); 
    string minns = Convert.ToString(minutes); 
    string seccs = Convert.ToString(seconds); 

    string s = string.Format("{0}:{1}:{2}", hhr, minns, seccs); 
    lbl.Text = s; 
} 

在C＃6 +它甚至eaiser：

string s = $"{hhr}:{minns}:{seccs}";