How to change date format from DD/MM/YYYY or MM/DD/YYYY to YYYY-MM-DD?

Question

i need to change the format of my date string using C#

from : "06/16/2010"or "16/06/2010"

to : "2010-06-16"

can you please help me achieve this

thanks

Answer 1

If you already have it as a DateTime , use:

string x = dt.ToString("yyyy-MM-dd");

See the MSDN documentation for more details. You can specify CultureInfo.InvariantCulture to enforce the use of Western digits etc. This is more important if you're using MMM for the month name and similar things, but it wouldn't be a bad idea to make it explicit:

string x = dt.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);

If you have a string to start with, you'll need to parse it and then reformat... of course, that means you need to know the format of the original string.

Answer 2

下面会做。

string datestring = DateTime.Now.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);

Answer 3

String dt = Date.Now.ToString("yyyy-MM-dd");

现在你为 dt 得到了这个，2010-09-09

Answer 4

We can do something like this

DateTime date_temp_from = DateTime.Parse(from.Value); //from.value" is input by user (dd/MM/yyyy)
DateTime date_temp_to = DateTime.Parse(to.Value); //to.value" is input by user (dd/MM/yyyy)

string date_from = date_temp_from.ToString("yyyy/MM/dd HH:mm");
string date_to = date_temp_to.ToString("yyyy/MM/dd HH:mm");

Thank you