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確定當前時間是否在多個時間范圍內

[英]Determine if current time falls within multiple time ranges

我編寫了一個簡單的應用程序來顯示當前時間(HH:MM)。 顯示的時間每秒鍾刷新一次DispatcherTimer。

考慮到我有一個XML格式的“配置”文件,其中包含一個小時列表,該小時列表必須以不同的顏色突出顯示5分鍾:

例:

  • 08:15→從8:15一直到8:20突出顯示
  • 10:20→從10:20到10:25突出顯示
  • 11:55→從11:55至12:00(含)期間突出顯示
  • 14:15→從14:15到14:20突出顯示
  • 16:05→從16:05到16:10(含)突出顯示

但是,如果存在“重疊”的可能性,例如:

  • 08:10
  • 08:12

然后應突出顯示時間,從8:15到08:17

您將如何實現將檢查當前/實際時間是否在這些范圍內的代碼?

您會首先為每個條目生成一個包含所有開始和結束時間的列表,然后每秒對照此列表檢查實際時間嗎? (每秒遍歷所有列表值)? : - /

還是您將以另一種方式實現這一目標?

編輯:這是到目前為止已完成的工作:

private enum DisplayState
{
    /// <summary>
    /// The application has just been started or reset due to changes to the configuration file
    /// </summary>
    Initial,

    /// <summary>
    /// The current displayed time is highlighed
    /// </summary>
    Highlighted,

    /// <summary>
    /// The current displayed time is not highlighed
    /// </summary>
    Normal
};

DisplayState _lastDisplayState = DisplayState.Initial;

// The list that retrieves the hours from the XML file as string values ("HH:MM")
// Note: this can be changed into a list of TimeSpan or anything else in a near future
private List<string> _hourList;

private DispatcherTimer _dispatcherTimer;

...

/// <summary>
/// What happens each second
/// </summary>
private void dispatcherTimerTick(object sender, EventArgs e)
{
    // Store current time
    _timeToDisplay = DateTime.Now.ToString("HH:mm");

    // Refresh displayed time
    tbDigitalClock.Text = tbDigitalClockBack.Text = _timeToDisplay;

    PlaceWindow();

    // Check if our list of hours contain current time
    // Note: for the moment _hourList is a list of strings (hours from the XML file)
    if (_hourList.Contains(_timeToDisplay))
    {
        // Only change appearance once if display state changed
        if (_lastDisplayState != DisplayState.Highlighted)
        {
            _lastDisplayState = DisplayState.Highlighted;

            // Play sound alert if desired
            if (_playSound)
                _soundPlayer.Play();

            // Highlight current displayed time
            tbDigitalClock.Foreground = Brushes.Yellow;
            tbDigitalClockBack.Foreground = Brushes.Black;
            mainBorder.Background = _highlightedBackColor;
            mainBorder.BorderBrush = Brushes.Red;
        }
    }
    else
    {
        if (_lastDisplayState != DisplayState.Normal)
        {
            _lastDisplayState = DisplayState.Normal;

            // Turn displayed time appearance back to normal
            tbDigitalClock.Foreground = _defaultTextColor;
            tbDigitalClockBack.Foreground = _defaultTextBackColor;
            mainBorder.Background = Brushes.Transparent;
            mainBorder.BorderBrush = Brushes.Transparent;
        }
    }
}

XML文件如下所示:

<DigiClock>
    <Config PlaySound="true" />
    <Breaks>
        <Time>10:00</Time>
        <Time>12:00</Time>
        <Time>14:30</Time>
        <Time>16:30</Time>
    </Breaks>
</DigiClock>

提前謝謝了! ;-)

看來您正在編寫GUI應用程序,我會使用一個計時器,將其間隔設置為1秒(或者5秒是否足夠?或者介於兩者之間?),並使用類似於以下內容的事件處理程序:

TimeSpan t = new TimeSpan(0, 5, 0); // five minutes
List<DateTime> _hourList;
bool _soundPlayed = false;

private void OnTimerTick()
{
    DateTime now = DateTime.Now;
    foreach (var h in _hourList)
    {
        if ((now >= h) && (now <= (h + t)))
        {
            if (_lastDisplayState != DisplayState.Highlighted)
            {
                _lastDisplayState = DisplayState.Highlighted;
                ...
            }

            if (!_soundPlayed)
            {
                _soundPlayed = true;
                _soundPlayer.Play();
            }
            return;
        }
    }

    // if code runs until here, we are out of any highlighted moment
    _soundPlayed = false;
    if (_lastDisplayState != DisplayState.Normal)
    {
        _lastDisplayState = DisplayState.Normal;
        ...
    }
}

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