systemtime

问题 I am trying to change system date and time using the following C# code. But the result is no change is occuring in systemdate(no error is thrown either). I tried by uncommenting the commented portion of the code too. But no effect. :( Afterward I tried to change time from command prompt.(not using c#) Then it showed "A required privilage is not held by the client." I know this message may not have any connection with the code, but I am adding it to make my situation clearer. [StructLayout

问题 Programming a raspberry pi with codesys, using mostly ladder, basically I need to write all data that is currently in a couple arrays to a csv file at midnight, so i'd like to be able to use a dt value as a trigger. I can't figure out how to use that value in ladder, however. I can display the local time on visualizer, but if i wanted something like "if localTime=#value" then coil 'Write' turns on, where is the actual variable for system time? 回答1: As far as I know, you need to read the clock

问题 In my test case, I need test time sensitive method, in that method we're using java 8 class LocalDate, it is not Joda . What can I do to change time, when I'm running test 回答1: In your code, replace LocalDate.now() with LocalDate.now(clock);. You can then pass Clock.systemDefaultZone() for production and a fixed clock for testing. This is an example : First, inject the Clock . If you are using spring boot just do a : @Bean public Clock clock() { return Clock.systemDefaultZone(); } Second,

问题 I know I can do this if I have a struct tm structure, but what if I want to do the same thing with a SYSTEMTIME. I could do this manually but just wondering if there's function that does this already. Thanks void PrintTimeSCII(struct tm *time) { char timebuf[26] = {0}; asctime_s(timebuf, 26, time); printf("%s\n", timebuf); } 回答1: GetDateFormat can be used for this. It can format the date using the appropriate format for a given locale. Below code shows how to use it for the user's default

问题 I found one piece of sample code from web forum. When I began to learn it. I found the output is very strange. Why does the code can't work well? It always go forward 8 hours when I run the code below. VS2005 and WinXP used.Thank you. class Tester { [System.Runtime.InteropServices.DllImport("kernel32", SetLastError = true)] private static extern bool GetSystemTime(out SYSTEMTIME systemTime); [System.Runtime.InteropServices.DllImport("kernel32", SetLastError = true)] private static extern bool

问题 I have next code: Calendar cal = Calendar.getInstance(); cal.add(Calendar.YEAR, mYear); /2011 cal.add(Calendar.MONTH, mMonth); /04 cal.add(Calendar.DAY_OF_MONTH, mDay);/13 cal.add(Calendar.HOUR, mHour); /11 cal.add(Calendar.MINUTE, mMinute); /53 System.out.println("Cal time "+ cal.getTimeInMillis()); System.out.println("System time " +System.currentTimeMillis()); cal time 64775494376227 System time 1302724616231 What's wrong in my code? 回答1: The problem is Calendar.getInstance() is already

问题 I am working on a legacy application in .NET 2.0 and I want to convert time from local time (which happens to be UTC+1) to the time in Brazil (that is "E. South America Standard Time" as Windows calls it) and back. I put together this code that I came up with to do the conversion: using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; using Microsoft.Win32; namespace timezone { class Program { [DllImport("kernel32.dll", CharSet = CharSet.Auto,

问题 I would like to use my local time as the System Time in Google Colab, but I believe by default it is set to UTC time as indicated here: Current Date Format How am I able to change the system time to my local time? 回答1: Here's how to do it. For me, I live in Asia/Bangkok !rm /etc/localtime !ln -s /usr/share/zoneinfo/Asia/Bangkok /etc/localtime !date Now I get Tue Apr 30 20:12:30 +07 2019 . You can see the list of timezones by !ls -al /usr/share/zoneinfo And go into sub-directories for each

问题 I am willing to ask if anyone has some good algorithm (or ways) to check if two SYSTEMTIME variable has a diff of 30 days or longer? Thank you 回答1: I would convert them to FileTime and substract one from another. The difference should be more than 30*24*60*60*10^7 . 回答2: As the MSDN page on SYSTEMTIME says, It is not recommended that you add and subtract values from the SYSTEMTIME structure to obtain relative times. Instead, you should Convert the SYSTEMTIME structure to a FILETIME structure.

问题 I am developing a desktop app and it have an trial period after which application will get expire. Currently I am using system time. Since user can easily change it, I thought its not a good way to follow. Is there any other time service that is available which I can make use of? I heard something like system clock count or something like that which cannot be easily changed by user. Can anyone put light on this? 回答1: If you don't want to trust the system clock, you are going to have problems.