timespan

I want to save the user's hours worked in a database varchar column, but by default, the formatted value includes days if the number of hours is more than 24. I just want the total number of hours. For example: if a user works 10:00:00 hours today, then 13:00:00 hours tomorrow, and 3:30:00 hours the day after tomorrow then the formatted total I want is 26:30:00. Instead, I am seeing 1.2:30:00. How can I get the formatting I want? Also, when I save the value 40:00:00 in the database manually, and try to read it into a TimeSpan later, I get a bug. How can I save the hours in the database the way

There has to be an easy answer: var totalTime = TimeSpan.Zero; foreach (var timesheet in timeSheets) { //assume "time" is a correct, positive TimeSpan var time = timesheet.EndTime - timesheet.StartTime; totalTime.Add(time); } There's only one value in the list timeSheets and it is a positive TimeSpan (verified on local inspection). TimeSpans are value types. Try: totalTime = totalTime.Add(time) This is a common mistake. TimeSpan.Add returns a new instance of TimeSpan . Jason Coyne totalTime = totalTime.Add(time) 来源： https://stackoverflow.com/questions/3580947/why-isnt-my-timespan-add-working

I want to show in a TextBox only hour and minutes var test = dataRow.Field<TimeSpan>("fstart").ToString(); //test ="08:00:00" var tb = (TextBox) gridViewRow.Cells[2].FindControl("fstart"); tb.Text = test; how to show only hours and minutes "hh.mm" You need to convert your data to TimeSpan and then use format: "hh\:mm" string test ="08:00:00"; TimeSpan ts = TimeSpan.Parse(test); Console.Write(ts.ToString(@"hh\:mm")); In your case: var test = dataRow.Field<TimeSpan>("fstart").ToString(@"hh\:mm")); Remember to escape the colon : You may see: Custom TimeSpan Format Strings There is no need to

Possible Duplicate: How do I calculate someone’s age in C#? I want to calculate basically the age of employees - So we have DOB for each employee, So on the C# Side I want to do something like this - int age=Convert.Int32(DateTime.Now-DOB); I can use days and manipulate then get the age...but I wanted to know if there something I can use directly to get the number of years. alexn Do you want calculate the age in years for an employee? Then you can use this snippet (from Calculate age in C# ): DateTime now = DateTime.Today; int age = now.Year - bday.Year; if (bday > now.AddYears(-age)) age--;

You can specify a custom format for a DateTime object like this: DateTime.Now.ToString("HH:mm:ss"); // 19:55:23 But when I try to use the same format for a TimeSpan object like this: DateTime.Now.TimeOfDay.ToString("HH:mm:ss"); I get the "Input string was not in a correct format." exception. It turns out, the solution is that you need to escape the ':' characters like in "HH\\:mm\\:ss" . Note that there is a double backslash because if you specify only one, it will break the string so you need to escape that one too. The question is, why .NET Framework developers made it this way? There must

I want to convert a Timespan to Datetime. How can I do this? I found one method on Google: DateTime dt; TimeSpan ts="XXX"; //We can covnert 'ts' to 'dt' like this: dt= Convert.ToDateTime(ts.ToString()); Is there any other way to do this? Arif Eqbal It is not very logical to convert TimeSpan to DateTime. Try to understand what leppie said above. TimeSpan is a duration say 6 Days 5 Hours 40 minutes. It is not a Date. If I say 6 Days; Can you deduce a Date from it? The answer is NO unless you have a REFERENCE Date. So if you want to convert TimeSpan to DateTime you need a reference date. 6 Days &