无法解析日期时间

Question

var date = "05/18/2012";

DateTime.ParseExact(date, "yyyy/MM/dd", CultureInfo.InvariantCulture)

DateTime.Parse(date);

I think the problem here is that the date should be day/month/year. The problem is that the client wants it in this format. The system must be able to operate in English and french. I want all dates to be parsed in the same way so they are all in the format - yyyy/MM/dd.

Neither of the previous examples seem to work.

EDIT: I can set the date in the format 2012/05/18 but how do I do that for a DateTime.Now?

Answer 1

It should be

string date = "05/18/2012";
DateTime dateA = DateTime.ParseExact(date, "MM/dd/yyyy", CultureInfo.InvariantCulture);
string newDate = dateA.ToString("yyyy-MM-dd");

Answer 2

ParseExact allows you to tell the parser what format the date is in. So in your example you are saying it is yyyy/MM/dd so you should have the date setup like "2012/05/18" for it to parse correctly.

Here is example.

var date = "05/18/2012";
var date2 = "2012/05/18";

var pDate = DateTime.Parse(date);
var pDate2 = DateTime.ParseExact(date2, "yyyy/MM/dd", null);

Console.WriteLine("Normal Date Formated: " + pDate.ToString("yyyy/MM/dd"));
Console.WriteLine("Your Format, Parsed: " + pDate2.ToShortDateString());
Console.WriteLine("DateTime.Now Formatted: " + DateTime.Now.ToString("yyyy/MM/dd"));

Output

Normal Date Formated: 2012/05/18
Your Format, Parsed: 5/18/2012
DateTime.Now Formatted: 2012/09/18