For strings such as 2012-09-19 01:27:30.000
, DateTime.Parse
cannot tell what time zone the date and time are from.
DateTime
has a Kind property, which can have one of three time zone options:
NOTE If you are wishing to represent a date/time other than UTC or your local time zone, then you should use DateTimeOffset
.
So for the code in your question:
DateTime convertedDate = DateTime.Parse(dateStr);
var kind = convertedDate.Kind; // will equal DateTimeKind.Unspecified
You say you know what kind it is, so tell it.
DateTime convertedDate = DateTime.SpecifyKind(
DateTime.Parse(dateStr),
DateTimeKind.Utc);
var kind = convertedDate.Kind; // will equal DateTimeKind.Utc
Now, once the system knows its in UTC time, you can just call ToLocalTime
:
DateTime dt = convertedDate.ToLocalTime();
This will give you the result you require.
See Windows Batch File (.bat) to get current date in MMDDYYYY format:
@echo off
For /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set mydate=%%c-%%a-%%b)
For /f "tokens=1-2 delims=/:" %%a in ('time /t') do (set mytime=%%a%%b)
echo %mydate%_%mytime%
If you prefer the time in 24 hour/military format, you can replace the second FOR line with this:
For /f "tokens=1-2 delims=/:" %%a in ("%TIME%") do (set mytime=%%a%%b)
C:> .\date.bat
2008-10-14_0642
If you want the date independently of the region day/month order, you can use "WMIC os GET LocalDateTime" as a source, since it's in ISO order:
@echo off
for /F "usebackq tokens=1,2 delims==" %%i in (`wmic os get LocalDateTime /VALUE 2^>NUL`) do if '.%%i.'=='.LocalDateTime.' set ldt=%%j
set ldt=%ldt:~0,4%-%ldt:~4,2%-%ldt:~6,2% %ldt:~8,2%:%ldt:~10,2%:%ldt:~12,6%
echo Local date is [%ldt%]
C:>test.cmd
Local date is [2012-06-19 10:23:47.048]
Best Answer
The
plusDays
method is not a mutator. It returns a copy of the givenDateTime
object with the change made rather than changing the given object.If you want to actually change the variable
dateTime
value, you'll need: