C# DateTime to “YYYYMMDDHHMMSS” format

Question

I want to convert a C# DateTime to \"YYYYMMDDHHMMSS\" format. But I don\'t find a built in method to get this format? Any comments?

Answer 1

An easy Method, Full control over 'from type' and 'to type', and only need to remember this code for future castings

DateTime.ParseExact(InputDate, "dd/MM/yyyy", CultureInfo.InvariantCulture).ToString("yyyy/MM/dd"));

Answer 2

If you use ReSharper, get help with ':' (see image)

Answer 3

I am surprised no one has a link for this . any format can be created using the guidelines here:

Custom Date and Time Format Strings

For your specific example (As others have indicated) use something like

my_format="yyyyMMddHHmmss";
DateTime.Now.ToString(my_format);

Where my_format can be any string combination of y,M,H,m,s,f,F and more! Check out the link.

Answer 4

Get the date as a DateTime object instead of a String. Then you can format it as you want.

• MM/dd/yyyy 08/22/2006
• ffffdd, dd MMMM yyyy Tuesday, 22 August 2006
• ffffdd, dd MMMM yyyy HH:mm Tuesday, 22 August 2006 06:30
• ffffdd, dd MMMM yyyy hh:mm tt Tuesday, 22 August 2006 06:30 AM
• ffffdd, dd MMMM yyyy H:mm Tuesday, 22 August 2006 6:30
• ffffdd, dd MMMM yyyy h:mm tt Tuesday, 22 August 2006 6:30 AM
• ffffdd, dd MMMM yyyy HH:mm:ss Tuesday, 22 August 2006 06:30:07
• MM/dd/yyyy HH:mm 08/22/2006 06:30
• MM/dd/yyyy hh:mm tt 08/22/2006 06:30 AM
• MM/dd/yyyy H:mm 08/22/2006 6:30
• MM/dd/yyyy h:mm tt 08/22/2006 6:30 AM
• MM/dd/yyyy HH:mm:ss 08/22/2006 06:30:07

Click here for more patterns

Answer 5

You've just got to be careful between months (MM) and minutes (mm):

DateTime dt = DateTime.Now; // Or whatever
string s = dt.ToString("yyyyMMddHHmmss");

(Also note that HH is 24 hour clock, whereas hh would be 12 hour clock, usually in conjunction with t or tt for the am/pm designator.)

If you want to do this as part of a composite format string, you'd use:

string s = string.Format("The date/time is: {0:yyyyMMddHHmmss}", dt);

For further information, see the MSDN page on custom date and time formats.

Answer 6

It is not a big deal. you can simply put like this

WriteLine($"{DateTime.Now.ToString("yyyy-MM-dd-HH:mm:ss")}");

Excuse here for I used $ which is for string Interpolation .