将结果字符串日期时间转换为日期时间值

Question

i am fetching datetime value through xml like:

string time = "20150605020247+0000"

I want to convert into datetime value. I tried with DateTime.Parse , ParseExact , Convert.ToDateTime . It's not working, it's returning the error:

string was not recognised as valid datetime

Answer 1

You should be able to use DateTime.ParseExact , since you know the exact format of the string. If we assume it's year, month, day, hour, minute, second, and offset, then you can do something like:

var result = DateTime.ParseExact("20150605020247+0000", "yyyyMMddHHmmsszzz", 
    CultureInfo.InvariantCulture);

Answer 2

你应该像这样使用DateTime.ParseExact

DateTime theTime = DateTime.ParseExact(time,  "ddMMyyyyHHmmss+ffff,CultureInfo.InvariantCulture);

Answer 3

You need to use exact format specifier in your ParseExact method.

DateTime.ParseExact("20150605020247+0000", "yyyyMMddHHmmsszzz", System.Globalization.CultureInfo.InvariantCulture);

Fiddle: https://dotnetfiddle.net/cQJ9hN

EDIT:

Please check the standard DateTime formats used in .NET world: https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-date-and-time-format-strings plus check the source of your data how exactly are the string dates produced. However most likely the '+####' part of your string is the local date UTC offset , not the fractions part of the time (as other answers suggest). So parsing the date by using the "yyyyMMddhhmmssffff" would produce wrong results .