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如何使用？

HumanizeTime(string date) 函数，传入时间格式的字符串即可。如：HumanizeTime(“2010-12-21”);
注意： 传入的时间要小于当前的时间。

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/// <summary>
/// 把两个时间差，用人性化时间表示
/// </summary>
/// 被比较的时间</param>
/// 目标时间</param>
/// <returns></returns>
public static string ConvertDateTime(string date, DateTime currentDateTime)
{
    if (Utils.StrIsNullOrEmpty(date))
        return "";

    DateTime time;
    if (!DateTime.TryParse(date, out time))
        return date;

    string result = "";

    if (DateDiff("year", time, currentDateTime) > 0)
    {
        return DateDiff("year", time, currentDateTime) + "年前";
    }
    else if (DateDiff("month", time, currentDateTime) < 12 && DateDiff("month", time, currentDateTime) > 0)
    {
        return DateDiff("month", time, currentDateTime) + "月前";
    }
    else if (DateDiff("day", time, currentDateTime) < 30 && DateDiff("day", time, currentDateTime) > 0)
    {
        return DateDiff("day", time, currentDateTime) + "天前";
    }
    else if (DateDiff("hour", time, currentDateTime) < 24)
    {
        if (DateDiff("hour", time, currentDateTime) > 0)
            return DateDiff("hour", time, currentDateTime) + "小时前";

        if (DateDiff("minute", time, currentDateTime) > 0)
            return DateDiff("minute", time, currentDateTime) + "分钟前";
        else
            return "刚才";
    }
    else
        result = time.ToString("yyyy-MM-dd HH:mm");
    return result;
}

/// <summary>
/// 两个时间的差值，可以为秒，小时，天，分钟
/// </summary>
/// 需要得到的时差方式</param>
/// 起始时间</param>
/// 结束时间</param>
/// <returns></returns>
public static long DateDiff(string Interval, DateTime StartDate, DateTime EndDate)
{

    long lngDateDiffValue = 0;
    System.TimeSpan TS = new System.TimeSpan(EndDate.Ticks - StartDate.Ticks);
    switch (Interval)
    {
        case "second":
            lngDateDiffValue = (long)TS.TotalSeconds;
            break;
        case "minute":
            lngDateDiffValue = (long)TS.TotalMinutes;
            break;
        case "hour":
            lngDateDiffValue = (long)TS.TotalHours;
            break;
        case "day":
            lngDateDiffValue = (long)TS.Days;
            break;
        case "week":
            lngDateDiffValue = (long)(TS.Days / 7);
            break;
        case "month":
            lngDateDiffValue = (long)(TS.Days / 30);
            break;
        case "quarter":
            lngDateDiffValue = (long)((TS.Days / 30) / 3);
            break;
        case "year":
            lngDateDiffValue = (long)(TS.Days / 365);
            break;
    }
    return (lngDateDiffValue);
}

/// <summary>
/// 转换时间为人性化时间
/// </summary>
/// 被转换的时间</param>
/// <returns></returns>
public static string HumanizeTime(string date)
{
    return ConvertDateTime(date, DateTime.Now);
}



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