Possible Duplicate: How to measure time in milliseconds using ANSI C? How can I get the Windows system time with millisecond resolution? We want to calculate the. How do you measure the execution time in milliseconds or microseconds in Windows C++? I found many method one calling time(NULL), but it measures time in seconds only.

@kaufmed; Well this, DateTime.Now, does give the current date and time but date and time as stored in a date time type is the total time since Jan 1, 00001. C Windows Form Mouse Events Unity there. So when you apply a Ticks method to it, it returns the total since Jan 1, 00001. If you just want the total time in the current day then you need to get the time at 12:00 AM and subtract it from the current date time and then apply the Ticks method and then apply the TotalMilliseconds method to that which will return the total milliseconds just for today as can be seen from the code snippet. // This will give the total number of millseconds from Jan 1, 00001 double totalMill = (new TimeSpan(DateTime.Now.Ticks)). The Third Birthday Psp Iso on this page. TotalMilliseconds; Console.WriteLine(totalMill.ToString()); // This will give the total milliseconds in today double tickDiff = ((new TimeSpan(DateTime.Now.Ticks)) - (new TimeSpan(DateTime.Today.Ticks))).TotalMilliseconds; Console.WriteLine(tickDiff.ToString()); Select all Fernando. This should cover three of the possibilities. Let us know the status of this question.

// Total millseconds since midnight double sinceMidnight2 = (DateTime.Now - DateTime.Today).TotalMilliseconds; // Total milliseonds since Jan. 1, 1970 double sinceJanFirst1970 = (DateTime.Now - DateTime.Parse('1/1/1870 0:0:0')).TotalMilliseconds; // Total milliseconds since Jan. 0001 or the start of the DateTime value or DateTimeMinValue double sinceBeginingOfTime = new TimeSpan(DateTime.Now.Ticks).TotalMilliseconds; Select all.

Windows does not want to waste electricity by updating the system clock 1000 times per second, so the default is to only update it 60-100 times per second. If you set the multimedia timer to 1ms, you can get 1ms resolution from the clock, but that's not recommended. To elaborate more on the electricity savings, what happens when the CPU is idle for a period of time is that it can go into a very-low-power state. Whenever it gets interrupted (e.g. To increment the clock ticks) it has to leave its very-low-power state and use lots of electricity to power the whole CPU to service that interrupt. In other words, the additional power isn't in incrementing the clock ticks, it's in keeping the CPU awake to do it.

Since my laptop uses 10W at idle when the clock frequency is 60Hz and 11W when it's 1000Hz, and I get 300 minutes of battery life, that slower clock is giving me almost 30 extra minutes of battery life!