[c#] DateTime.Today.ToString("dd/mm/yyyy") returns invalid DateTime Value

I am trying to get todays date in GBR format but,

DateTime.Now.ToString("dd/mm/yyyy");

returns with the value of 08/00/2013

So 00 in the month group was returned instead of returning the month 04.

Any ideas why this happened?

In addition to what the other answers have said, note that the '/' character in "dd/MM/yyyy" is not a literal character: it represents the date separator of the current user's culture. Therefore, if the current culture uses yyyy-MM-dd dates, then when you call toString it will give you a date such as "31-12-2016" (using dashes instead of slashes). To force it to use slashes, you need to escape that character:

DateTime.Now.ToString("dd/MM/yyyy")     --> "19-12-2016" for a Japanese user
DateTime.Now.ToString("dd/MM/yyyy")     --> "19/12/2016" for a UK user
DateTime.Now.ToString("dd\\/MM\\/yyyy") --> "19/12/2016" independent of region

It should be MM for months. You are asking for minutes.

DateTime.Now.ToString("dd/MM/yyyy");

See Custom Date and Time Format Strings on MSDN for details.

There are only minor error.Use MM instead of mm ,so it will be effective write as below:

 @DateTime.Now.ToString("dd/MM/yyy")

use MM(months) instead of mm(minutes) :

DateTime.Now.ToString("dd/MM/yyyy");

check here for more format options.

Use MM for months. mm is for minutes.

DateTime.Now.ToString("dd/MM/yyyy");

You probably run this code at the begining an hour like (00:00, 05.00, 18.00) and mm gives minutes (00) to your datetime.

From Custom Date and Time Format Strings

"mm" --> The minute, from 00 through 59.

"MM" --> The month, from 01 through 12.

Here is a DEMO. (Which the month part of first line depends on which time do you run this code ;) )