问题
I use this code for converting Timespan to String (for ex: 14:53) :
myTimeSpan.ToString("hh:mm");
but this error occurs:
Input string was not in a correct format
What is the proper way to do this?
回答1:
myTimeSpan.ToString(@"hh\:mm")
Custom TimeSpan Format Strings
The custom TimeSpan format specifiers do not include placeholder separator symbols, such as the symbols that separate days from hours, hours from minutes, or seconds from fractional seconds. Instead, these symbols must be included in the custom format string as string literals. For example, "dd.hh\:mm" defines a period (.) as the separator between days and hours, and a colon (:) as the separator between hours and minutes.
回答2:
You need to use @"hh\:mm\" for TimeSpan. Timespan formatting is not exactly same as DateTime
myTimeSpan.ToString(@"hh\:mm");
Check out Msdn for more info
回答3:
var result = string.Format("{0:D2}:{1:D2}", myTimeSpan.Hours, myTimeSpan.Minutes);
回答4:
From TimeSpan.ToString Method (String)
TimeSpan t = new TimeSpan(14, 53, 0);
Console.WriteLine(t.ToString(@"hh\:mm"));
As an alternative you can use String.Format like;
Console.WriteLine(String.Format("{0}:{1}", t.Hours, t.Minutes));
- Standard TimeSpan Format Strings
- Custom TimeSpan Format Strings
Remember, TimeSpan.ToString(String) overload only avaiable for .NET 4 or higher.
回答5:
Try this will work 100% !!
myTimeSpan.ToString(@"dd\.hh\:mm");.
来源：https://stackoverflow.com/questions/18482460/how-convert-timespan-to-24-hours-and-minutes-string