C# Convert date (day-Month-year) to MM/dd/yyy Error String was not recognized as a valid DateTime
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C# Convert date (day-Month-year) to MM/dd/yyy Error String was not recognized as a valid DateTime
I am reading a date from a csv which has date in format "8-Mar-18". I am using DateTime.ParseExtract to convert it to date format "MM/dd/yyyy" but I am getting error as
String was not recognized as a valid DateTime.
Here is a repro:
using System.Globalization;
DateTime.ParseExact("8-Mar-18", "MM/dd/yyyy", CultureInfo.InvariantCulture);
How do I convert it to MM/dd/yyy ?
Thanks all.
If you want to parse a string into a DateTime use the correct format string. The result will be a DateTime object which does not have any format. It's a binary value
– Panagiotis Kanavos
23 mins ago
DateTime.Parse("8-Mar-18", CultureInfo.InvariantCulture) works just fine. It returns a DateTime object whose value is March 8, 2018. Formatting applies only during parsing or generating strings. If you want to display a DateTime in a certain way use a format string, or the set the appropriate Format property in whatever control or UI element you use to display it– Panagiotis Kanavos
22 mins ago
DateTime.Parse("8-Mar-18", CultureInfo.InvariantCulture)
Format
2 Answers
2
It's a two step process.
DateTime d = DateTime.ParseExact("8-Mar-18", "d-MMM-yy", CultureInfo.InvariantCulture);
string s = d.ToString("MM/dd/yyyy");
That generates a string, not a DateTime. DateTime has no format.
DateTime.Parse("8-Mar-18", CultureInfo.InvariantCulture) would work just as well, there's no reason to use ParseExact– Panagiotis Kanavos
20 mins ago
DateTime.Parse("8-Mar-18", CultureInfo.InvariantCulture)
ParseExact
@PanagiotisKanavos thanks for the details.
– ProgSky
18 mins ago
It can be done on one line.
var s = DateTime.ParseExact("8-Mar-18", "d-MMM-yy", CultureInfo.InvariantCulture).ToString("MM/dd/yyyy");
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"8-Mar-18" is not "MM/dd/yyyy" is it? Further. dates do not have a format so this may all be for nought
– Plutonix
24 mins ago