I want to parse the following input "10:05" in format "minutes:seconds" in seconds. So 10:05 should be 10 * 60 = 600 + 5 = 605. How can I manage to do this with code ?
Just split the string, parse the numbers, and do your calculation:
string s = "10:05";
var parts = s.Split(':');
int seconds = int.Parse(parts[0]) * 60 + int.Parse(parts[1]);
Console.WriteLine(seconds); // 605
You can also use TimeSpan.Parse in this case which is able to parse this format if you add a hour part in front of it. You can then use the TotalSeconds property to get your desired result:
double seconds = TimeSpan.Parse("00:" + s).TotalSeconds;
Console.WriteLine(seconds); // 605
#poke is close, but you asked for seconds, thus:
string s= "10:05";
double seconds = TimeSpan.Parse("00:" + s).TotalSeconds;
Returns 605.
There are many ways to do this. Here are just a couple. If you know that the format is always going to be mm:ss then you could use the TimeSpan class, the ParseExact method, and the TotalSeconds property. Here's an example of how you could do it.
TimeSpan ts = TimeSpan.ParseExact(mytime, "mm:ss", System.Globalization.CultureInfo.InvariantCulture);
double seconds = ts.TotalSeconds;
If you have a bunch of different formats that can show up you can use the ParseExact and provide multiple time formats. Here's an example that takes a few formats.
//HH -> 24 hour format always with 2 digits ("08" = 8 hours)
// H -> 24 hour format with as few digits as possible ("8" = 8 hours)
//mm -> minutes always with 2 digits ("08" = 8 minutes)
// m -> minutes with as few digits as possible ("8" = 8 minutes)
//ss -> seconds always with 2 digits ("08" = 8 seconds)
// s -> seconds with as few digits as possible ("8" = 8 seconds)
string[] formats = new string["HH:mm:ss", "H:mm:ss", "mm:ss", "m:ss", "ss", "s"];
TimeSpan ts = TimeSpan.ParseExact(mytime, formats, System.Globalization.CultureInfo.InvariantCulture);
double seconds = ts.TotalSeconds;
Here's a link to the MSDN documentation for the TimeSpan class. Check out the Methods and Properties for the TimeSpan class. Here's a link on formatting time strings.
The other way is to manually split the input string into the two parts and use the Convert class to convert each part into integers or doubles.
string[] timeparts = mytime.Split(':');
string minstr = timeparts[0];
string secstr = timeparts[1];
int mins = Convert.ToInt32(minstr);
int secs = Convert.ToInt32(secstr);
int seconds = mins * 60 + secs;
Here's the documentation for the Convert class.
Related
I want to Subtract two time strings that I read from an excel sheet, for example 150:24 and 124:30.
The time format is HHH:MM in the excel sheet. How can I subtract these two strings in C#?
I can not illustrate the data format! also I can not write true code for this issue.
You can calculate the times difference based on minutes. Then convert to any format you want...
var s1 = "150:24".Split(':');
var s2 = "124:30".Split(':');
var diffMinutes= int.Parse(s1[0]) * 60 + int.Parse(s1[1]) - int.Parse(s2[0]) * 60 - int.Parse(s2[1]);
Console.WriteLine("difference in minutes: " +diffMinutes);
//difference in minutes: 1554
Console.WriteLine("difference in HHH:MM: "+ diffMinutes/60 + ":"+diffMinutes%60);
//difference in HHH:MM: 25:54
TimeSpan t= TimeSpan.FromMinutes(result);
Console.WriteLine(t);
//1.01:54:00
TimeSpan.Parse unfortunately does not work is the hour part is > 23. But of course it is possible to split on the ':', convert the hour and minute parts to integers separately and construct a TimeSpan from it:
public static TimeSpan ParseHoursAndMinutes(string s)
{
// NOTE: no error checking!
var parts = s.Split(':');
var hours = int.Parse(parts[0]);
var minutes = int.Parse(parts[1]);
return new TimeSpan(hours, minutes, 0);
}
var diff = ParseHoursAndMinutes("150:24") - ParseHoursAndMinutes("124:30");
Console.WriteLine(diff); // => 1.01:54:00
I’m trying to solve this problem :
I’ve a large amount of minutes and I want to convert them into hours only, when I try with TimeSpan, it always shows days and hours.
My example code :
double minutes = 2000 ;
TimeSpan hours = TimeSpan.FromMinutes(minutes);
label1.Text = hours.ToString(#"hh\:mm");
The output result is 09:20 but I wanted this result 33:20
How can I convert minutes to get exact numbers of hours ?
This code produces the 33:20 result you're asking:
double minutes = 2000;
TimeSpan ts = TimeSpan.FromMinutes(minutes);
var res = $"{(int)ts.TotalHours}:{ts.Minutes}";
You need to use TotalHours on the TimeSpan object.
string.Format("{0}:{1}",
(int) hours.TotalHours,
hours.Minutes);
Yet another possibility is to use 0 and 00 formatting strings in order to combine formatting and truncating:
double minutes = 2000;
// 2000 -> 33:20
// 1808 -> 30:08
// 8 -> 0:08
label1.Text = $"{minutes/60:0}:{minutes%60:00}";
If minutes can be negative, you should add Math.Abs:
// -2000 -> -33:20
label1.Text = $"{minutes/60:0}:{Math.Abs(minutes)%60:00}";
public static void Main()
{
//assigning values to variable
double minutes = 2000;
TimeSpan tspan = TimeSpan.FromMinutes(minutes); //converting minutes to timespan
string res1 = (int)tspan.TotalHours +" Hours " + tspan.Minutes +" Minutes";
string res2= (int)tspan.TotalHours + ":"+tspan.Minutes;
string res3= Convert.ToInt32(tspan.TotalHours) + "."+tspan.Minutes +" Hours";
Console.WriteLine(res1);
Console.WriteLine(res2);
Console.WriteLine(res3);
}
Output:
33 Hours 20 Minutes
33:20
33.20 Hours
Do it manually and use
string.Format("{0:D2}:{1:D2}",(int)minutes/60, (int)minutes%60)
or without casting:
string.Format("{0:00}:{1:00}", minutes/60, minutes%60)
Since C#6 with String Interpolation:
$"{minutes/60:00}:{minutes%60:00}"
I have time "00.05.415" (mm:ss.000) which is in string format.
I want to convert it to a TIME format where I can add multiple times such as "00.05.415"+"00.06.415"+"00.07.415" to get one single added time.
You'll want to use TimeSpan.ParseExact so you can specify the format that the time is in and then you can add the time spans together:
public static void Main(string[] args)
{
TimeSpan span1 = Convert("00.05.415");
TimeSpan span2 = Convert("00.07.415");
TimeSpan result = span1 + span2;
Console.WriteLine(result);
Console.ReadKey();
}
public static TimeSpan Convert(string span)
{
return TimeSpan.ParseExact(span, #"mm\.ss\.fff", CultureInfo.InvariantCulture);
}
https://msdn.microsoft.com/en-us/library/ee372287(v=vs.110).aspx
You'd want to take a look at the link that Avitus has and has the one here.
I'll have to ask why you'd want to add them together. You can't really 'add' times together .
One possible options is to to convert each to milliseconds and then formatting the resultant value.
5 seconds + 3.2 seconds could be:
5000 + 3200 = 8200.
You'd then use System.TimeSpan to convert that into days, hours, minutes ...etc
thanks for the correction Matt
If you know that the format is predefined to be mm:ss.000 you can do following to parse to TimeSpan:
var strings = "00:05.415".Split(new []{'.', ':'}, StringSplitOptions.RemoveEmptyEntries);
var minutes = int.Parse(strings[0]);
var seconds = int.Parse(strings[1]);
var milliseconds = int.Parse(strings[2]);
var time = new TimeSpan(0, 0, minutes, seconds, milliseconds);
And then you can add TimeSpans together.
If your format is not predefined use this 4KB script https://github.com/alekspetrov/time-input-js
It converts string/number into time format HH:MM:SS
Examples
00:00:00 -> 00:00:00
12:01 -> 12:01:00
12 -> 12:00:00
25 -> 00:00:00
12:60:60 -> 12:00:00
1dg46 -> 14:06
["notatime"] -> 00:00:00 + console warn
in my application
Ex 1: Start time 12.30
(-)End time 16.00 here i get the value as 3.7 but i need to show this 3.7 as 3.5 in my application
Ex 2: Start time 12.00
(-)End time 16.00 here i get the value as 4.0 here there is no need to alter the value
(1.7,2.7,3.7,4.7,.... etc ) as to be represented as(1.5,2.5,3.5,4.5,.. etc )
so how to write an function for this where if the vale contains(1.7,2.7) i should change to 1.5,2.5
or if it contains 1.0,2.0 then there is no need to replace any value?
This extension method ought to do the job:
public decimal RoundToNearestHalf(this decimal value)
{
return Math.Round(value * 2) / 2;
}
var num1 = (3.7).RoundToNearestHalf(); // 3.5
var num1 = (4.0).RoundToNearestHalf(); // 4.0
I've used the decimal type in the code because it seems you want to maintain base 10 precision. If you don't, then float/double would do just as well, of course.
Use the DateTime type. Subtracting DateTime types returns a TimeSpan. Use TimeSpan.TotalHours to get your result. E.g.:-
var x = DateTime.Parse("12:30");
var y = DateTime.Parse("16:00");
Console.WriteLine((y - x).TotalHours);
Use DateTime type to work with time. Example:
string time1 = "12:30";
string time2 = "16:00";
TimeSpan diff = DateTime.Parse(time2)-DateTime.Parse(time2);
string diffString = diff.ToString("hh:mm"); // will be 03:30
Multiply hours with 60 and add minutes. You'll get total number of minutes.
12hours and 30 minutes = 720 + 30 = 750 minutes.
16 hours = 960 minutes.
Subtract the first value from the other and divide it by 60
(960 - 750) / 60 = 210 / 60 = 3.5
You should use TimeSpan and round it off:
TimeSpan startTime = new TimeSpan(12, 30, 0);
TimeSpan endTime = new TimeSpan(16, 0, 0);
TimeSpan span = endTime - startTime;
double totalHours = span.TotalHours;
double roundedToHalf = Math.Round(totalHours * 2) / 2;
Console.WriteLine(roundedToHalf);
UPDATE:
If the start and end time are from different dates, you should use DateTime for startTime and endTime.
If the values in your question represent times you can't do decimal arithmetic with them and expect time values as results.
You need to manipulate the values as times
I don't know C#, but it must have some time functions.
Have the times as DateTime then use Timspan to find the difference between the two times?
Times are not integers or floats. You can't work with them as if they are - you wouldn't try to do integer math using the String class, would you?
DateTime and TimeSpan are you friends for this kind of data manipulation.
You can use the C# Floor and Ceil method of the Math Class. Read more about it in the below URLs:
http://msdn.microsoft.com/en-us/library/system.math.ceiling(VS.71).aspx
http://dotnetperls.com/math-floor
string i = "2.0";
if (i == "2.3" || i == "3.3" || i == "4.3")
{
string strReplace = i.Replace(".3", ".5");
}
else
{
string strReplace = i;
}
I have a minute value and i want to have to 2 string values one with how many hours and the other with the minutes, e.g.:
Value - 121 minutes
string hours = 2
string minutes = 1
Value - 58 minutes
string hours = 0
string minutes = 58
How can I work this out in C#?
var span = System.TimeSpan.FromMinutes(121);
var hours = ((int)span.TotalHours).ToString();
var minutes = span.Minutes.ToString();
The ToString() is because you asked for string values ...
TotalHours are the complete hours in the TimeSpan, they can be more than 24 (whereas the "Hours" field has a maximum of 24)
Oh, and on second thought: Why use the TimeSpan and not calculate it yourself? Because TimeSpan is already there debugged & tested by Microsoft, it has a nice clean interface (looking at the code you easily see whats going on without having to follow a calculation mentally) and it easily extends to further solutions. (Have the input in seconds? Use TimeSpan.FromSeconds(). Want the days? Use span.TotalDays ...)
Update:
I just noticed mistake in my answer: TotalHours returns a fractional value of all the hours, so we have to truncate it to an integer before converting it to a string.
Use a Timespan struct and its Parse method.
int value = 121;
int hours = value / 60; // 2
int minutes = value % 60; // 1
string strHours = hours.ToString();
string strMinutes = minutes.ToString();
int value = 121;
int hours = value / 60;
int minutes = value % 60;
int value = 121;
TimeSpan timeSpan = TimeSpan.FromMinutes(value);
// gives you the rounded down value of 2
int hours = timeSpan.Hours;
// gives you the minutes left of the hour
int minutes = value - (hours * 60);