I am developing windows forms application and has to display datetime line chart with real time data for every one second.
I have to display time on x-axis in the format of (days:hours:min:sec). The time should be 00:00:00:00, 00:00:00:01, 00:00:00:02 etc.
I am taking first response time(system time) as reference time date1. Again after 1 sec, sending request, getting response, capturing system time as date2 and continuously doing like this. I am getting response timespan by subtracting date2 and date1.
But for datetime chart the x-axis only accepts datetime type variable and has to convert to double using ToOADate().
Problem: While converting timespan 00:00:06.2867597 to datetime variable it is converting as 7/25/2016 12:00:06 AM . But I need the fomat 00:00:06
instead of 12:00:06 AM.
Then only using ToOADate(), I will get the correct double value.
Please solve my problem.
Here is my code:
DateTime date1 = DateTime.Now; // {7/25/2016 8:13:29 PM}
DateTime date2 = DateTime.Now; // {7/25/2016 8:13:30 PM}
TimeSpan time = date2 .Subtract(date1); // {00:00:01.3922821}
DateTime logTime = Convert.ToDateTime(time.ToString()); // {7/25/2016 12:00:01 AM}
But I need logTime value should be "00:00:01".
When you are using the DateTime then it will automatically show as your system DateTime format. You have to take it as string for desire output this way
string logTime = Convert.ToDateTime(time.ToString()).ToString("MM/dd/yyyy HH:mm:ss");
if you want only time part then
string logTime = Convert.ToDateTime(time.ToString()).ToString("HH:mm:ss");
To display your logTime as a 24-hour string:
logTime.ToString("HH:mm:ss");
You can't change the logTime DateTime value itself to represent 00:00:01, because they are the same value, you're just changing how you display it.
Related
I'm trying to bring over facebook events to my website. They will be coming from different regions. For example, an event is in Eastern Time (-4 hours difference from UTC) and my local time is Central time (-5 hours difference from UTC).
I am calling their graph API from a console app. I get the date of the events like this:
// get event items
me = fbClient.Get(url);
var startTime = me["start_time"];
var endTime = me["end_time"];
the start time shows: "2017-04-30T13:00:00-0400" object {string}
When I try to convert that string into a DateColumn type, it changes the output time to:
var dateTime = Convert.ToDateTime(startTime);
{4/30/2017 12:00:00 PM}
It shifted the hour from 13 -> 12, how do I convert the string into date using DateTime and not using DateTimeoffset?
This examples shows how to do it using DateTimeOffset, but I need mine in DateTime type?
https://stackoverflow.com/a/19403747/1019042
You can use the DateTime property of DateTimeOffset like the answer accepted in the link you've provided.
Or, if you really like to do it just with DateTime you can if you cut the timezone from the string:
var dt = DateTime.ParseExact(startTime.Substring(0,19),
"yyyy-MM-ddTHH:mm:ss",
CultureInfo.InvariantCulture);
I want to add time duration to my datetime variable. I am reading the duration from a csv file. The format of duration is 0:29:40 or 1:29:40. When i add this to datetime variable it gives exception of incorrect format. How can I add the duration using this format. Previously I had duration as a simple integer like "6" or "7" but now the format is this "0:29:40" I don't know how to change my code to accommodate this format.
Previously i was doing this
double hours = Convert.ToDouble(row.Cells[2].Value.ToString());
DateTime newdate = finaldate.AddHours(hours);
row.Cells[2].Value.ToString() reads the value from csv
Any help is appreciated, Thanks
You don't need to parse to a double. Parse to a TimeSpan. Something like:
var source = "0:29:40";
var ts = TimeSpan.Parse(source);
Now ts is your time span. And the nice thing with TimeSpan is you can just add it to a DateTime:
DateTime newdate = finaldate + ts;
You are going to need to use the TimeSpan.Parse() or TimeSpan.ParseExact() method to properly parse your string and then simply add that TimeSpan result to your existing date:
var time = TimeSpan.Parse(row.Cells[2].Value.ToString());
DateTime newDate = finalDate.Add(time);
If you need to explicitly specify what each of the values of your time represent, then the TimeSpan.ParseExact() method will allow you to provide a formatting string to specify this:
// This will assume that 1:29:40 is hours, minutes, and seconds
var time = TimeSpan.ParseExact(row.Cells[2].Value.ToString(), #"h\:m\:s", null);
I want convert long dateTime to only date in C#. and both in dateTime type
DateTime creationDate = DateTime.Now;
DateTime shortDate = creeationDate.Date;
A DateTime is a struct, which always has -- as the name suggests -- date and time components. You cannot remove the time and there is, as far as I know, no built-in date-only type in .NET (maybe there is in some 3rd party libraries).
You have already discovered the Date property of DateTime which returns an new DateTime with the time components set to 00:00:00.000.
If you only need to output your current date you must apply some formatting on the DateTime
DateTime creationDate = DateTime.Now;
string shortDate = creatationDate.ToString("yyyy-MM-dd"); //or whatever formatting you need.
If you need calculations on your date, but want to ignore the time component, you could initialize your date accordingly, as you have done in your code.
DateTime creationDate = DateTime.Now.Date; //sets time component to 00:00
DateTime otherDate = new DateTime(2016, 11, 2, 0,0,0); //also initializies with time 00:00
int diff = (int)(otherDate-creationDate).TotalDays; //number of days between the two dates
Hi I currently have a TimePicker. It returns an object TimeSpan.
What I need to do is to set a DateTimeOffset that is equal to current date plus the TimeSpan from the TimePicker.
How can I actually get the current DateTimeOffset.now that doesn't have a Time on it, only the Date so that I can add the offset to it.
Thanks
As in DateTime object you have a Date property, it returns date part without time (it means time is 00:00:00).
DateTime today = DateTimeOffset.Now.Date;
DateTime result = today + yourTimeSpan;
With this solution will lost Offset information (because Date is a DateTime). To keep it you just need to subtract time part:
DateTimeOffset now = DateTimeOffset.Now;
DateTimeOffset result = now - now.Time + yourTimeSpan;
Or with constructor:
DateTimeOffset now = DateTimeOffset.Now;
DateTimeOffset result = new DateTimeOffset(now.Date + yourTimeSpan, now.Offset);
Can you not just .Date it?
var a = DateTimeOffset.Now.Date;
try using:
DateTime.Today
instead of Now.
i am having an input string of HH:MM:SS for example 15:43:13,
now i want to convert it to datetime but keep just the hour/time without the date etc
is it possible?
for example
string userInput = 15:43:13;
DateTime userInputTime = Convert.ToDateTime(userInput);
will give me the full date including the year etc,
is there any way to convert it to just HH:MM:SS without triming/substring?
thanks
As others have said, it's a TimeSpan.
You can get a datetime by doing this
string userInput = "15:43:13";
var time = TimeSpan.Parse(userInput);
var dateTime = DateTime.Today.Add(time);
To just get a time span, you can use:
TimeSpan.Parse("15:43:13")
But you should ask yourself why you want to do this as there are some fairly significant gotchas. For example, which 2:33 AM do you want when it's Sunday, November 3, 2013, and daylight savings time is ending? There are two of them.
If you don't need the extra data (year etc.) use TimeSpan
You can convert from the user input to a TimeSpan using Timespan.Parse
for example:
TimeSpan ts = TimeSpan.Parse("6:12"); //06:12:00
Read more here:
http://msdn.microsoft.com/en-us/library/se73z7b9.aspx