DateTime ToString（“dd / MM / yyyy”）返回dd.MM.yyyy

Question

I have also tried shielding the '/' symbol in the formatting string, but it didn't quite work. My final goal is to get the date with the '/' symbols as separators. I guess I can use DateTime.ToString(“dd/MM/yyyy”).Replace('.', '/') , but that feels a bit excessive.

Answer 1

The / character in date/time format strings stands for "whatever the date separator of the format provider is". Since you do not supply a format provider Thread.CurrentCulture is used, and in your case the current culture uses . as the date separator.

If you want to use a literal slash, place it inside single quotes:

dateTime.ToString("dd'/'MM'/'yyyy");

Alternatively, you could specify a format provider where the date separator is / :

dateTime.ToString("dd/MM/yyyy", CultureInfo.InvariantCulture);

All of the above is documented on MSDN .

See the difference in a live example .

Answer 2

string s = dt.ToString("dd/M/yyyy", CultureInfo.InvariantCulture)

Answer 3

This is because of the way ToString works by default , in accordance with the current culture:

This method uses formatting information derived from the current culture.

So, override that:

string date = dt.ToString("dd/M/yyyy", CultureInfo.InvariantCulture)

Answer 4

This works (note the InvariantCulture ):

DateTime.Now.ToString("dd/MM/yyyy", CultureInfo.InvariantCulture)

If a CultureInfo is not specified, the CurrentCulture will be used. If this is a culture that doesn't use slashes as separators in dates it is replaced by whatever the actual culture date separator is.