How to parse datetime with DateTime.ParseExact

问题

I have the following string that I need to parse

string date = "2017-06-23T13:45:45.816"

What is correct format string?

I tried

DateTime createDate = DateTime.ParseExact(date, "yyyy-MM-dd'T'hh-mm-ss", CultureInfo.InvariantCulture);

回答1:

yyyy-MM-dd'T'hh-mm-ss is not 2017-06-23T13:45:45.816 you have missing milliseconds, 12 hour clock and also wrong separators.

You'd probably need something like:

"yyyy-MM-dd'T'HH:mm:ss.fff"

Remember it's ParseExact.

回答2:

That seems an RFC 3339 date to me, so Convert.ToDateTime or DateTime.Parse will do.

string date = "2017-06-23T13:45:45.816";
DateTime dt = Convert.ToDateTime(date);

回答3:

Firstly You should Replace That 'T' With Blank Space ' '

string date = "2017-06-23T13:45:45.816";

date = date.Replace("T"," ");    // you can use this code to replace

 DateTime myDate = DateTime.ParseExact(date, "yyyy-MM-dd HH:mm:ss,fff",                                        System.Globalization.CultureInfo.InvariantCulture);

 Console.WriteLine(myDate.ToString("yyyy-MM-dd HH:mm:ss.fff")); 

// you can try this code might be it works for u

来源：https://stackoverflow.com/questions/44885467/how-to-parse-datetime-with-datetime-parseexact