如何截断。net DateTime的毫秒

我正在尝试比较来自传入请求的时间戳和数据库存储值。当然，SQL Server在时间上保持一些毫秒的精度，当读取到. net DateTime时，它包含了这些毫秒。但是，传入系统的请求不能提供这样的精度，所以我只需要去掉毫秒。

我觉得我遗漏了一些明显的东西，但我还没有找到一种优雅的方法来做到这一点(c#)。

当前回答

2上述解决方案的扩展方法

    public static bool LiesAfterIgnoringMilliseconds(this DateTime theDate, DateTime compareDate, DateTimeKind kind)
    {
        DateTime thisDate = new DateTime(theDate.Year, theDate.Month, theDate.Day, theDate.Hour, theDate.Minute, theDate.Second, kind);
        compareDate = new DateTime(compareDate.Year, compareDate.Month, compareDate.Day, compareDate.Hour, compareDate.Minute, compareDate.Second, kind);

        return thisDate > compareDate;
    }


    public static bool LiesAfterOrEqualsIgnoringMilliseconds(this DateTime theDate, DateTime compareDate, DateTimeKind kind)
    {
        DateTime thisDate = new DateTime(theDate.Year, theDate.Month, theDate.Day, theDate.Hour, theDate.Minute, theDate.Second, kind);
        compareDate = new DateTime(compareDate.Year, compareDate.Month, compareDate.Day, compareDate.Hour, compareDate.Minute, compareDate.Second, kind);

        return thisDate >= compareDate;
    }

用法:

bool liesAfter = myObject.DateProperty.LiesAfterOrEqualsIgnoringMilliseconds(startDateTime, DateTimeKind.Utc);

2012-07-13 11:00:56

其他回答

新方法

String Date = DateTime.Today.ToString("dd-MMM-yyyy");

//定义字符串传递参数dd-mm -yyyy返回24-feb-2016

或显示在文本框上

txtDate.Text = DateTime.Today.ToString("dd-MMM-yyyy");

//加载pagonload

2016-02-24 19:11:07

2上述解决方案的扩展方法

    public static bool LiesAfterIgnoringMilliseconds(this DateTime theDate, DateTime compareDate, DateTimeKind kind)
    {
        DateTime thisDate = new DateTime(theDate.Year, theDate.Month, theDate.Day, theDate.Hour, theDate.Minute, theDate.Second, kind);
        compareDate = new DateTime(compareDate.Year, compareDate.Month, compareDate.Day, compareDate.Hour, compareDate.Minute, compareDate.Second, kind);

        return thisDate > compareDate;
    }


    public static bool LiesAfterOrEqualsIgnoringMilliseconds(this DateTime theDate, DateTime compareDate, DateTimeKind kind)
    {
        DateTime thisDate = new DateTime(theDate.Year, theDate.Month, theDate.Day, theDate.Hour, theDate.Minute, theDate.Second, kind);
        compareDate = new DateTime(compareDate.Year, compareDate.Month, compareDate.Day, compareDate.Hour, compareDate.Minute, compareDate.Second, kind);

        return thisDate >= compareDate;
    }

用法:

bool liesAfter = myObject.DateProperty.LiesAfterOrEqualsIgnoringMilliseconds(startDateTime, DateTimeKind.Utc);

2012-07-13 11:00:56

DateTime d = DateTime.Now;
d = d.AddMilliseconds(-d.Millisecond);

2009-06-17 01:45:57

var date = DateTime.Now;

date = new DateTime(date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second, date.Kind);

2009-06-17 01:47:24

不是最快的解决方案，但简单易懂:

DateTime d = DateTime.Now;
d = d.Date.AddHours(d.Hour).AddMinutes(d.Minute).AddSeconds(d.Second)

2020-02-12 23:30:42

如何截断。net DateTime的毫秒

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