Change date format

Dinesh Santhalingam

9y1kVisual Basic .NET

I have a date

date time from=12/30/2016 12:00:00 AM

I want to convert it into 30/12/2016 12:00:00 AM

do some needful.

10 Replies

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Rafnas T P9y ago
hi Dinesh,
datedtime will take your system format,
if you convert and store into datetime again you will be getting same system date format but month will go to day and vise versa, so save it in string and use
here you can see the differnce
DateTime d1 = Convert.ToDateTime("11 / 12 / 2016"); // dec month

DateTime datetimeDate = Convert.ToDateTime(d1.ToString("MM/dd/yyyy")); // here will get november month this is wrong when you will get error when DateTime d1 = Convert.ToDateTime("25 / 12 / 2016"); day field is more than 12

string stringdate= d1.ToString("MM/dd/yyyy"); //here same and output will be 12 / 111 / 2016
Nitin Sontakke9y ago
Now this getting complicated...(saying this to myself!)

Let me try. First there is no such thing as date-time in terms of native or primary data types. The same goes with String data type. There is no such thing as String data type. It is an array of characters. Even character is nothing but an integer value.

Similarly, DateTime data-type is a human construct built on top of primary data type. All dates everywhere are stored as integers. This is just a wrapper to help business application developers, so that don't waste time (and resources) dealing with numbers.

So in summary, the date format you are seeing is based just on your computer regional settings. The date is actually NOT stored in that format.

You can format any DateTime type variable to any format you want just by telling it. The underlying value (which is in integer) never changes.
Dinesh Santhalingam9y ago
Actually i have a datetime variable in dd/mm/yyyy format.I want to convert it to the mm/dd/yyyy format without assign it to a string .

datetime d1=11/12/2016;
I want to convert it to another datetime variable.my output will be datetime d2=12/11/2016 like this.
Vineet Kumar9y ago
you can just use ToString() method with desired format as paramater -

DateTime MyDate =Convert.ToDateTime("12/30/2016 12:00:00");
MyDate .ToString("MM/dd/yyyy HH:mm")
Mangesh G9y ago
Hi Dinesh

Try this Please

string sss = Convert.ToDateTime("12/30/2016 1:00:00 PM").ToString("dd/MM/yy hh:mm tt");
Nitin Sontakke9y ago
If you have it in a text box, it means it is in a String type. You will first need to convert it to a DateTime type (in some variable) and then use .ToString() method as stated on that variable.

Hope it helps! If not, please post back.
Dinesh Santhalingam9y ago
Thanks for your response .@Nitin
Nitin Sontakke9y ago
To answer your question, all you have to do is use .ToString() method with an appropriate culture or format.
Dinesh Santhalingam9y ago
I don't have any code .I have a date in my textbox .I want to involve this datetime variable to some operation.For that i want to change the format @Nitin
Nitin Sontakke9y ago
Where exactly are you doing this? Please share some code. No formats are assigned natively to the DateTime datatype. Format are typically only for display purpose.