Question

我想返回一个字符串，这在语法上是正确的，以显示当前的正常运行时间。例如，3年，7个月，11天，1小时，16分钟和零秒，意味着单数单位不应该是复数，零单位应该是复数，但如果尚未出现则不应显示零（例如，如果尚未显示年份，月份等，则不显示）

由于ticks方法不会超过一个月，我使用ManagementObject，但我对如何进行日期时间计算和分解感到困惑（我对C＃很新，所以我正在制作一个实用程序各种各样的功能，所以我可以学习各种各样的东西。

这就是我现在所拥有的，而且不是很多......

非常感谢任何帮助。

        public string getUptime()
    {
        // this should be grammatically correct, meaning, 0 and greater than 1 should be plural, one should be singular
        // if it can count in realtime, all the better
        // in rare case, clipping can occur if the uptime is really, really huge

        // you need a function that stores the boot time in a global variable so it's executed once so repainting this won't slow things down with quer
        SelectQuery query = new SelectQuery("SELECT LastBootUpTime FROM Win32_OperatingSystem WHERE Primary='true'");
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
        foreach (ManagementObject mo in searcher.Get())
        {
            // this is the start time, do math to figure it out now, hoss
            DateTime boot = ManagementDateTimeConverter.ToDateTime(mo.Properties["LastBootUpTime"].Value.ToString());
            // or is it better to break up everything into days/hours/etc, i think its better to do that at the end before it gets returned
        }

        string now = DateTime.Now.ToShortDateString();







        return "3 years, 7 months, 11 days, 1 hour, 16 minutes and zero seconds";  // long string for testing label width
    }

Answer 1

不要'转换为字符串 - 使用您已经拥有的上次重启时间的DateTime并将其与当前时间（DateTime.Now）进行比较。减去这两个，你得到一个TimeSpan：

TimeSpan upDuration = DateTime.Now - boot;

TimeSpan具有您可以用来构建字符串的属性Days，Hours，Minutes。

Answer 2

搜索互联网我发现了一些导致我进入这些伪类的东西。可能会工作......

class Utils
{

    public DateTime GetLastDateTime()
    {
        // Insert code here to return the last DateTime from your server.
        // Maybe from a database or file?

        // For now I'll just use the current DateTime:
        return DateTime.Now;
    }

    public CustomTimeSpan GetCurrentTimeSpan()
    {
        // You don't actually need this method. Just to expalin better...
        // Here you can get the diference (timespan) from one datetime to another:

        return new CustomTimeSpan(GetLastDateTime(), DateTime.Now);
    }

    public string FormatTimeSpan(CustomTimeSpan span)
    {
        // Now you can format your string to what you need, like:

        String.Format("{0} year{1}, {2} month{3}, {4} day{5}, {6} hour{7}, {8} minute{9} and {10} second{11}",
            span.Years, span.Years > 1 ? "s" : "",
            span.Months, span.Monts > 1 ? "s" : "",
            span.Days, span.Days > 1 ? "s" : "",
            span.Hours, span.Hours > 1 : "s" : "",
            span.Minutes, span.Minutes > 1 : "s" : "",
            span.Seconds, span.Seconds > 1 : "s" : "");
    }

}

class CustomTimeSpan : TimeSpan
{

    public int Years { get; private set; }
    public int Months { get; private set; }
    public int Days { get; private set; }
    public int Hours { get; private set; }
    public int Minutes { get; private set; }
    public int Seconds { get; private set; }

    public CustomTimeSpan ( DateTime originalDateTime, DateTime actualDateTime )
    {
        var span = actualDateTime - originalDateTime;

        this.Seconds = span.Seconds;
        this.Minutes = span.Minutes;
        this.Hours = span.Hours;

        // Now comes the tricky part: how to get the day, month and year part...
        var months = 12 * (actualDateTime.Year - originalDateTime.Year) + (actualDateTime.Month - originalDateTime.Month);
        int days = 0;

        if (actualDateTime.Day < originalDateTime.Day)
        {
            months--;
            days = GetDaysInMonth(originalDateTime.Year, originalDateTime.Month) - originalDateTime.Day + actualDateTime.Day;
        }
        else
        {
            days = actualDateTime.Day - originalDateTime.Day;
        }

        this.Years = months / 12;
        months -= years * 12;
        this.Months = months;
        this.Days = days;
    }


}

从基本代码到Bob Scola的积分。 How to calculate age using TimeSpan w/ .NET CF?

在C＃中以语法正确的正常运行时间

2 个答案: