如果我想从 db 中检索日期和时间并以格式显示
“2 分钟前,刚刚,或 6 个月前”有点等等,
我该怎么做.. :)
任何人都可以建议我如何做到这一点,
string gettime(DateTime updatedat)
{
string toren = "A moment earlier";
TimeSpan ts = DateTime.Now - updatedat;
if (ts.TotalSeconds<60)
{
toren = ts.TotalSeconds.ToString() + " seconds ago";
}
else if (ts.TotalMinutes < 60)
{
toren = ts.TotalMinutes.ToString() + " minutes ago";
}
else if (ts.TotalHours < 24)
{
toren = ts.TotalHours.ToString() + " hours ago";
}
else if (ts.TotalDays < 30)
{
toren = ts.TotalDays.ToString() + " days ago";
}
else
{
double month = ts.TotalDays / 30;
if (month<13)
{
toren = month.ToString() + " months ago";
}
else
{
double year = month / 12;
toren = year.ToString() + " years ago";
}
}
return toren;
}
根据您的需要更改/优化它。
从这里引用的答案:
const int SECOND = 1;
const int MINUTE = 60 * SECOND;
const int HOUR = 60 * MINUTE;
const int DAY = 24 * HOUR;
const int MONTH = 30 * DAY;
if (delta < 0)
{
return "not yet";
}
if (delta < 1 * MINUTE)
{
return ts.Seconds == 1 ? "one second ago" : ts.Seconds + " seconds ago";
}
if (delta < 2 * MINUTE)
{
return "a minute ago";
}
if (delta < 45 * MINUTE)
{
return ts.Minutes + " minutes ago";
}
if (delta < 90 * MINUTE)
{
return "an hour ago";
}
if (delta < 24 * HOUR)
{
return ts.Hours + " hours ago";
}
if (delta < 48 * HOUR)
{
return "yesterday";
}
if (delta < 30 * DAY)
{
return ts.Days + " days ago";
}
if (delta < 12 * MONTH)
{
int months = Convert.ToInt32(Math.Floor((double)ts.Days / 30));
return months <= 1 ? "one month ago" : months + " months ago";
}
else
{
int years = Convert.ToInt32(Math.Floor((double)ts.Days / 365));
return years <= 1 ? "one year ago" : years + " years ago";
}
是的,我确实引用了。因为这个答案完全符合 PO 的要求。:)
编辑: PO 的问题:还有一件事.. 如果我从数据库中检索日期和时间字段怎么办。我怎么能暗示这个代码?
在不知道您的结构或代码的情况下,它看起来像这样:
var cmd = new SqlCommand(yourConnection);
cmd.CommandText = "SELECT yourDateColumn FROM yourTable";
using (var sr = cmd.ExecuteReader)
{
if (sr.Read)
{
var yourDateTime = sr.GetDateTime(0);
}
}