timespan

In my output of a grid, I calculate a TimeSpan and take its TotalHours . e.g. (Eval("WorkedHours") - Eval("BadgedHours")).TotalHours The goal is to show the TotalHours as 39:44 , so I need to convert the value from 7.5 to 07:30 . This is no problem... unless it's negative! I can create a TimeSpan object from Hours with TimeSpan.FromHours( (Eval("WorkedHours") - Eval("BadgedHours")).TotalHours) If it's negative, I can't convert it to a DateTime to use the .ToString("HH:mm") method, and the TimeSpan object does not support the format string. Jared Isn't there a TimeSpan.Duration method? I think

Is there a standard library method that converts a string that has duration in the standard ISO 8601 Duration (also used in XSD for its duration type) format into the .NET TimeSpan object? For example, P0DT1H0M0S which represents a duration of one hour, is converted into New TimeSpan(0,1,0,0,0). A Reverse converter does exist which works as follows: Xml.XmlConvert.ToString(New TimeSpan(0,1,0,0,0)) The above expression will return P0DT1H0M0S. This will convert from xs:duration to TimeSpan: System.Xml.XmlConvert.ToTimeSpan("P0DT1H0M0S") See http://msdn.microsoft.com/en-us/library/system.xml

I have a MVC page containing a few timepickers. These are stored in a list of objects in the model as nullable TimeSpan . The problem is that I get the timespans printed with seconds into the input fields. Is there some way to format these model properties so that I get the timespans printed in some other way (like 7:00 , instead of 07:00:00 )? Needless to say, my "suggestion" of [DisplayFormat...] didn't work. At least not the way I hoped. The input fields are defined like this: @Html.TextBoxFor(x => x.Shifts[i].Start) The relevant part of the model looks like: public class Workshift {

I have two calendars and each return a DateTime from calendar.SelectedDate. How do I go about subtracting the two selected dates from each other, giving me the amount of days between the two selections? There is a calendar.Subtract() but it needs a TimeSpan instead of DateTime. You can use someDateTime.Subtract(otherDateTime) , this returns a TimeSpan which has a TotalDays property. Jon Skeet Just use: TimeSpan difference = end - start; double days = difference.TotalDays; Note that if you want to treat them as dates you should probably use TimeSpan difference = end.Date - start.Date; int days

Would appreciate it if anyone can help me figure out to substract 2 datetime fields to get the days left difference. Maxim Zaslavsky This is very easy to do with C#. For comparing DateTimes, we have a class called TimeSpan . The TimeSpan structure, in this case, would be defined as the difference between your two datetimes . Let's say that your DateTimes are called start and end. DateTime start = new DateTime(2009, 6, 14); DateTime end = new DateTime(2009, 12, 14); We have established our DateTimes to June 14, 2009 and December 14, 2009. Now, let's find the difference between the two. To do