I have a TimeSpan field that adds up time spent on something. For example the time could be 33 hours, so the format is 33:56:00
I want to compare this to 10 hours to calculate how many over hours were done.
TimeSpan totalActualHours = new TimeSpan(0, 0, 0, 0, 0);
if (totalActualHours > TimeSpan.Parse(txtEstimateHrs.Text))
{
tmpOverHours = totalActualHours.Subtract(TimeSpan.Parse(txtEstimateHrs.Text));
}
But since totalActualHours is over 24 hours the format is coming out like 1.09:56:00 instead of 33:56:00. So txtEstimateHrs.Text is equal to 10 and I want to see if 33:56:00 is greater and if so then how many hours is it greater?
So the code is comparing if (1.09:56:00 > 10.00:00:00) so it never goes into the if statement.
The issue here is Timespan in converting the hours into days so 33 hours changes to 1 day and 9 hours, and the txtEstimateHrs.Text is an integar 10 and that changes to 10 days. I need both times to be in hours format and be able to compare them
You just need to properly construct the timespan object using the appropiate format. In your case, you can choose between
hour, min sec
day, hour, min, sec, millisec
Sample code:
Case 1
TimeSpan tmpOverHours;
TimeSpan totalActualHours = new TimeSpan(33, 56, 0);
TimeSpan hoursToCompare = new TimeSpan(int.Parse(txtEstimateHrs.Text), 0, 0);
if (totalActualHours > hoursToCompare)
{
tmpOverHours = totalActualHours.Subtract(hoursToCompare);
}
Case 2
TimeSpan tmpOverHours;
TimeSpan totalActualHours = new TimeSpan(0, 33, 56, 0, 0);
TimeSpan hoursToCompare = new TimeSpan(0, int.Parse(txtEstimateHrs.Text), 0, 0, 0);
if (totalActualHours > hoursToCompare)
{
tmpOverHours = totalActualHours.Subtract(hoursToCompare);
}
It seems you are having a parsing error when you are doing:
TimeSpan.Parse(txtEstimateHrs.Text)
if the text is "10" the parse method will interpret the value as days.
So you could change that code to something like:
TimeSpan.FromHours(int.Parse(txtEstimateHrs.Text))
Which will parse the number in the textbox into an int and use that to create a TimeSpan which correctly has the number of hours and not days.
Edit: On a side note, don't parse the text twice, better use a variable to hold the parsed TimeSpan and then use it.
I am not sure i understood your requirement but you can use the TimeSpan.Compare() method.
var t1 = new TimeSpan(33, 21, 12);
var t2 = new TimeSpan(10, 0, 0);
if (TimeSpan.Compare(t1, t2) > 0)
{
Console.WriteLine(t1.ToString() + " is longer");
}
Edit:
The above code will work fine if the Timespan objects can be created correctly. In case you are working with strings in the format of hh:mm:ss then you will need to split them and call the correct Timespan constructor. Something like below:
public static TimeSpan ConvertStringToTimeStamp(string s)
{
// add checks for input like >0, not null or empty
var split = s.Split(':');
TimeSpan ts;
switch (split.Length)
{
case 3:
ts = new TimeSpan(int.Parse(split[0]), // hours
int.Parse(split[1]), // minutes
int.Parse(split[2])); // seconds // seconds);
break;
case 2:
ts = new TimeSpan(int.Parse(split[0]), // hours
int.Parse(split[1]), // minutes
0); // 0 seconds
break;
case 1:
ts = new TimeSpan(int.Parse(split[0]), // hours
0, // 0 minutes
0); // 0 seconds
break;
default:
throw new Exception("Invalid Input");
}
return ts;
}
Related
C# WinForms here.
I need to extract Seconds and Milliseconds from a similar string: "13.9" where 13 are Seconds and 9 Milliseconds.
To do this i use a String.Split() function and after i create a TimeSpan object with the corresponding values (suppose TimeString is "13.9"):
private TimeSpan TimeSplit(string TimeString)
{
var Seconds = Int32.Parse(TimeString.Split('.')[0]); //output 13
var Milliseconds = Int32.Parse(TimeString.Split('.')[1]); //output 9
var ts = new TimeSpan(0, 0, 0, Milliseconds, Decimals);
return ts;
}
Now i need to use the TimeSpan to show formatted output:
TimeSpan TempTs = TimeSplit(output);
SetTextMP(TempTs.ToString(#"hh\:mm\:ss\.ff"));
I need to have an output like: hh:mm:ss.ff but in my try Milliseconds(ff) stay fixed to 0. I checked and they are there..
As stated in the comments, the issue here is because 9 milliseconds amounts to 0.009 seconds. Running it with format specifier fff displays the complete millisecond value.
How do I get the time difference between two DateTime objects using C#?
The following example demonstrates how to do this:
DateTime a = new DateTime(2010, 05, 12, 13, 15, 00);
DateTime b = new DateTime(2010, 05, 12, 13, 45, 00);
Console.WriteLine(b.Subtract(a).TotalMinutes);
When executed this prints "30" since there is a 30 minute difference between the date/times.
The result of DateTime.Subtract(DateTime x) is a TimeSpan Object which gives other useful properties.
You want the TimeSpan struct:
TimeSpan diff = dateTime1 - dateTime2;
A TimeSpan object represents a time interval (duration of time or elapsed time) that is measured as a positive or negative number of days, hours, minutes, seconds, and fractions of a second. The TimeSpan structure can also be used to represent the time of day, but only if the time is unrelated to a particular date.
There are various methods for getting the days, hours, minutes, seconds and milliseconds back from this structure.
If you are just interested in the difference then:
TimeSpan diff = (dateTime1 - dateTime2)).Duration();
will give you the positive difference between the times regardless of the order.
If you have just got the time component but the times could be split by midnight then you need to add 24 hours to the span to get the actual difference:
TimeSpan diff = dateTime1 - dateTime2;
if (diff < 0)
{
diff = diff + TimeSpan.FromDays(1);
}
What you need is to use the DateTime classs Subtract method, which returns a TimeSpan.
var dateOne = DateTime.Now;
var dateTwo = DateTime.Now.AddMinutes(-5);
var diff = dateTwo.Subtract(dateOne);
var res = String.Format("{0}:{1}:{2}", diff.Hours,diff.Minutes,diff.Seconds));
The way I usually do it is subtracting the two DateTime and this gets me a TimeSpan that will tell me the diff.
Here's an example:
DateTime start = DateTime.Now;
// Do some work
TimeSpan timeDiff = DateTime.Now - start;
timeDiff.TotalMilliseconds;
IF they are both UTC date-time values you can do TimeSpan diff = dateTime1 - dateTime2;
Otherwise your chance of getting the correct answer in every single possible case is zero.
var startDate = new DateTime(2007, 3, 24);
var endDate = new DateTime(2009, 6, 26);
var dateDiff = endDate.Subtract(startDate);
var date = string.Format("{0} years {1} months {2} days", (int)dateDiff.TotalDays / 365,
(int)(dateDiff.TotalDays % 365) / 30, (int)(dateDiff.TotalDays % 365) / 30);
Console.WriteLine(date);
private void button1_Click(object sender, EventArgs e)
{
TimeSpan timespan;
timespan = dateTimePicker2.Value - dateTimePicker1.Value;
int timeDifference = timespan.Days;
MessageBox.Show(timeDifference.ToString());
}
You can use in following manner to achieve difference between two Datetime Object. Suppose there are DateTime objects dt1 and dt2 then the code.
TimeSpan diff = dt2.Subtract(dt1);
You need to use a TimeSpan. Here is some sample code:
TimeSpan sincelast = TimeSpan.FromTicks(DateTime.Now.Ticks - LastUpdate.Ticks);
I have to thank for the early help to advise the "Tick". Now am pretty much got in to my logic except one thing, i have a unix time in my database ,when i was trying to convert to real time and do the logic.
Sorry, let me describe the problem once again,
I have four different timestamp pulled out from DB (Start,End,Start1,End1) converted from unix to real time. am using the following code to do the conversion
DateTime = Convert.ToDateTime("1/1/1970").AddSeconds(SnapTo5Mins(Convert.ToDouble(UnixDate))).AddHours(GMTOFFset);
Problem here is,when the value is zero in the coloumn then the date time is returning like (1/1/1970).
for eg. my start value is zero in the database then it retruns (1/1/1970)
Step 1: compare the timestamp is not equal to 1/1/1970 (origin time)
step 2: if its not equal then do Break = End.Subtract(Start); Step
3: if its equal then assign the break value to zero or whatever step
4: repeat step 1,2,3 for start1 step 5: concatenate both break +
break1
DateTime Origin = new DateTime(1970, 1, 1, 12, 0, 0, 0);
DateTime Start ="01/01/1970 12:00";
DateTime End = 01/01/1970 12:00";
DateTime Start1 ="02/10/2013 12:20";
DateTime End1 = "02/10/2013 02:20";
TimeSpan Break;,finalMealBreak1;
if (Origin.Year != Start.Year)
{
Break = End.Subtract(Start);
}
else
{
Break = //Assign constant value zero
}
if (Origin.Year != Start1.Year)
{
Break1 = End1.Subtract(Start1);//break1 value must be 2hrs
}
else
{
Break1 = //Assign constant value zero
}
TimeSpan FinalBreakResult = Break + Break1; (FinalBreakresult value suppose to be 2 hrs )
Thanks in advance
Not 100% sure what you are trying to get from the timespan, I think 0? But you can do a few things to get values.
TimeSpan.Zero // timespan of 0
DateTime.Now.TimeOfDay // returns a value of the current time in a timespan
// obviously also works with any datetime
TimeSpan.FromSeconds(100) // timespan with 100 seconds
// There are a few of these, like FromHours, FromDays
Edit: Using your code
DateTime Origin = new DateTime(1970, 1, 1, 12, 0, 0, 0);
DateTime Start = DateTime.Parse("01/01/1970 12:00:00");
DateTime End = DateTime.Parse("01/01/1970 12:00:00");
DateTime Start1 = DateTime.Parse("02/10/2013 12:20:00");
DateTime End1 = DateTime.Parse("02/10/2013 14:20:00");
TimeSpan Break, Break1;
if (Origin.Year != Start.Year)
{
Break = End.Subtract(Start);
}
else
{
Break = TimeSpan.Zero;
}
if (Origin.Year != Start1.Year)
{
Break1 = End1.Subtract(Start1);//break1 value must be 2hrs
}
else
{
Break1 = TimeSpan.Zero;
}
TimeSpan FinalBreakResult = Break + Break1;
// Value of FinalBreakResult is 2 hours
Of course. To add to #Dan Saltmer's answer:
DateTime then = DateTime.Now;
Thread.Sleep(500);
TimeSpan span = DateTime.Now - then;
It is 8:30 and I am trying to find out how many seconds there are between now and the next whole hour (9:00). I think I just want to DateTime.Now.AddHours(1) but after I do that I think I need the "floor". How to get that value?
Thanks.
Just round the time of day in hours up to the next integral value:
var timeOfDay = DateTime.Now.TimeOfDay;
var nextFullHour = TimeSpan.FromHours(Math.Ceiling(timeOfDay.TotalHours));
var delta = (nextFullHour - timeOfDay).TotalSeconds;
//Completely misread. Completely re-writing
I woudl just do something Like this
int minutesToNextHour = 60 - DateTime.Now.Minutes;
int secondsToNextHour = minutesToNextHour * 60;
You don't have to mess around with ceilings and floors. The DateTime.Hour property represents whole hours (it is an integer beteen 0 and 23) of the time of the day represented by the DateTime. You can use this and the DateTime.Date property to strip the components of the DateTime you don't want (sub-hour data) and then just subtract as necessary to produce a TimeSpan.
var now = DateTime.Now;
var timeToNextHour = now.Date.AddHours(now.Hour + 1) - now;
You can of course extract the TotalSeconds component of the resulting TimeSpan if you want the result in seconds.
This seems to be the most simple:
3600 - DateTime.Now.TimeOfDay.TotalSeconds % 3600
(if you want it in whole numbers - integer - then prefix DateTime.Now... with (int).
So you'd need to subtract the 'remainder' minutes, find the difference, and multiply that by 60, right?
How about this:
var currentTime = DateTime.Now;
var hour = currentTime.AddHours(1).Hour;
var newTime = Convert.ToDateTime(hour + ":00");
var timespan = newTime.Subtract(currentTime);
var secondsDiff = timespan.TotalSeconds;
TimeSpan sec = new TimeSpan(0, 0, 3600 - (DateTime.Now.Minute * 60));
How about:
var now = DateTime.Now;
int secondsTillNextHour = (60 - now.Minute)*60+(60-now.Second);
Or (maybe clearer):
int SecondsTillNextHour = 3600 - 60*now.Minute - now.Second;
A more readable version:
public double SecondsToNextHour()
{
return SecondsToNextHour( DateTime.Now );
}
public double SecondsToNextHour( DateTime moment )
{
DateTime currentHour = new DateTime( moment.Year, moment.Month, moment.Day, moment.Hour, 0, 0 );
DateTime nextHour = currentHour.AddHours( 1 );
TimeSpan duration = nextHour - moment;
return duration.TotalSeconds;
}
TimeSpan result = (new DateTime(DateTime.Now.Year, DateTime.Now.Month,
DateTime.Now.Day, DateTime.Now.Hour + 1, 0, 0)).Subtract(DateTime.Now);
Basically here you are building a new DateTime that is one hour on from Now, with no minutes or seconds, then you subtract Now from this and have your result.
I would Timespan.Parse 08:30, add 1 hr to the object, then retrieve the hour part and build a new string with :00 as the minutes and reparse the new string. There may be a more efficient way to do this, but I find this technique clear to read.
How can I find difference between two time intervals.
Like 13:45:26.836 - 14:24:18.473 which is of the format "Hour:Min:Sec:Millisecs". Now i need to find the time difference between these two times.
How can i do this in C#.?
Thanks in advance.
Basically, what you need to do is put those time values into DateTime structures. Once you have your two DateTime variables, just subtract them from one another - the result is a variable of type TimeSpan:
DateTime dt1 = new DateTime(2010, 5, 7, 13, 45, 26, 836);
DateTime dt2 = new DateTime(2010, 5, 7, 14, 24, 18, 473);
TimeSpan result = dt2 - dt1;
string result2 = result.ToString();
TimeSpan has a ton of properties that get sets - the difference in all sorts of units, e.g. milliseconds, seconds, minutes etc. You can also just do a .ToString() on it to get a string representation of the result. In result2, you'll get something like this:
00:38:51.6370000
Is that what you're looking for?
i'm posting an example;
you can check it and adapt your program,
/* Read the initial time. */
DateTime startTime = DateTime.Now;
Console.WriteLine(startTime);
/* Do something that takes up some time. For example sleep for 1.7 seconds. */
Thread.Sleep(1700);
/* Read the end time. */
DateTime stopTime = DateTime.Now;
Console.WriteLine(stopTime);
/* Compute the duration between the initial and the end time.
* Print out the number of elapsed hours, minutes, seconds and milliseconds. */
TimeSpan duration = stopTime - startTime;
Console.WriteLine("hours:" + duration.Hours);
Console.WriteLine("minutes:" + duration.Minutes);
Console.WriteLine("seconds:" + duration.Seconds);
Console.WriteLine("milliseconds:" + duration.Milliseconds);
Find the number of seconds; subtract both numbers and then you can figure out the time difference. Depending on the programming language you use, I am positive their must be a library that can handle it.
//Start off with a string
string time1s = "13:45:26.836";
string time2s = "14:24:18.473";
TimeSpan interval = DateTime.Parse(time2s) - DateTime.Parse(time1s);
This will produce a result of:
Days 0 int Hours 0 int
Milliseconds 637 int
Minutes 38 int Seconds 51 int
Ticks 23316370000 long
TotalDays 0.02698653935185185 double
TotalHours 0.64767694444444446 double
TotalMilliseconds 2331637.0 double
TotalMinutes 38.860616666666665 double
TotalSeconds 2331.6369999999997 double