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String with dd/MM/yyyy format to Date time irrespective of System date time format [duplicate]

I need convert the date of string format 'MM/dd/yyyy' to datetime format 'MM/dd/yyyy' when the system date format is 'dd/MM/yyyy'.

DateTime stores a date as a numerical value, not as a string. So asking for a DateTime type of format 'MM/dd/yyyy' doesn't make much sense. If you are displaying the date in a WPF control, it will default to displaying a string that conforms to the system date format. But that is just a display string that you can manipulate using the format strings alluded to in the links above. Using #Sajeetharan's code will create a DateTime struct with the correct value internally. How you display it is up to you and your string formatting choices.
The same goes for dates stored in a database column of type 'datetime'. The value is stored numerically. Your query editor will display the value likely in the same format as your system settings. If the date is stored as a string, then again, #Sajeetharan's code is the correct way to convert the database string into a DateTime struct.

use DateTime.ParseExact
DateTime.ParseExact("05/02/2014", "dd/MM/yyyy", CultureInfo.InvariantCulture)
.ToString("MM/dd/yyyy", CultureInfo.InvariantCulture);

This may help:
string dateString="05/02/2014";
DateTime txtmyDate = DateTime.ParseExact(dateString, "MM/dd/yyyy",
CultureInfo.InvariantCulture);

try this
string dateString="05/02/2014";
DateTime txtmyDate =convert.toDateTime(dateString);

DateTime dt = DateTime.ParseExact("05/02/2014","MM/dd/yyyy",CultureInfo.InvariantCulture);

Convert date time string in dd/mm/yyyy to datetime format mm/dd/yyyy

There is an input from CSV file which is in dd/mm/yyyy format.
I have to pass these date values to the stored procedure.
I want to convert this to mm/dd/yyyy format before I bulkcopy it to the database table from the datatable in the c# code.
Should I do this in the code or in the stored procedure which I am sending it to?
Please advise.I have tried all possible combinations.

You could you use DateTime.ParseExact,
var parsedDate = DateTime.ParseExact(dateString, "dd/MM/YYYY", CultureInfo.InvariantCulture);
where dateString is the string representation of the date you want to parse.
If your stored procedures expects a DateTime you could use the parseDate value. Otherwise, if it expects a string in the format you mentioned, you can pass the following value:
parsedDate.ToString("MM/dd/YYYY")

You should parse your value to DateTime in C# and pass this date value to your SQL client or ORM without converting it to a string

If your SQL column type is set to either one of the date value types it is quite impossible to format the date according to your desire, since the database engine does not store the formatted value but the date value itself.
Make sure to parse the DateTime in-code before updating its value in the SQL database.
string date = "2000-02-02";
DateTime time = DateTime.Parse(date); // Will throw an exception if the date is invalid.
There's also the TryParse method available for you. It will make sure the date value you're trying to parse is indeed in the right format.
string input = "2000-02-02";
DateTime dateTime;
if (DateTime.TryParse(input, out dateTime))
{
Console.WriteLine(dateTime);
}
After the storage you're more than welcome to select your preferred display format for your DateTime variable using one of the given formats (read link below for a full list of available formats).
https://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx

remove time from date and print only date in datetime format

i have date stored in a string format as follows: "2014-03-12"
im passing this to a database which accepts the date as datetime.
im converting the string date to datetime format as follows:
DateTime StartDates = Convert.ToDateTime(StartDate);
but the time gets appended along with the date as "2014-03-12 12:00:00:00"
can anyone tel me how to send only the date leaving out the time.
i want the final date to be still in datetime format only but with time part cut off

DateTime is irrespective of the format. Formatting is only useful for presentation purpose. A DateTime object will have a Date part and Time part. When you try parsing your string "2014-03-12", it doesn't have a Time part, so in the parsed object, Time is set to 00:00:00.
If you just want to to display date then you can use DateTime.ToShortDateString method or use a custom format like:
string formattedDateString = StartDates.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);

If you're happy with the date part, you may simply return the Date property of the DateTime conversion result:
DateTime StartDates = Convert.ToDateTime(StartDate).Date;
I should mention that using Convert.ToDateTime puts you at the mercy of the process current culture date format though, so you probably want to use the ParseExact or ToString method like the other answers suggests, with the appropriate format and culture instance.

Format Exception - string not recognized as a valid DateTime

I have an issue similar to this > Format exception String was not recognized as a valid DateTime
However, my spec requires a date format of ddMMyyyy, therefore I have modified my code but I am still getting the same error
DateTime now = DateTime.Now;
DateTime dt = DateTime.ParseExact(now.ToString(), #"ddMMyyyy", CultureInfo.InvariantCulture);
I am unclear why.

You code fails because you are attempting to parse a date in the format ddMMyyyy, when by default DateTime.ToString() will produce a format with both date and time in the current culture.
For myself in Australia that would be dd/MM/yyy hh:mm:ss p e.g. 11/10/2013 11:07:03 AM
You must realise is that the DateTime object actually stores a date as individual components (e.g. day, month, year) that only needs to be format when you output the value into whatever format you desire.
E.g.
DateTime now = DateTime.Now;
string formattedDate = now.ToString("ddMMyyyy", DateTimeFormatInfo.InvariantInfo);
For more information see the api doc:
http://msdn.microsoft.com/en-us/library/8tfzyc64.aspx

For ParseExact to work, the string coming in must match exactly the pattern matching. In the other question you mentioned, the text was coming from a web form where the format was specified to be exactly one format.
In your case you generated the date using DateTime.Now.ToString() which will not be in the format ddMMyyyy. If you want to make the date round trip, you need to specify the format both places:
DateTime now = DateTime.Now;
DateTime dt = DateTime.ParseExact(now.ToString("ddMMyyyy"), #"ddMMyyyy", CultureInfo.InvariantCulture);

Debug your code and look at what the result of now.ToString() is, it's is not in the format of "ddMMyyyy", which is why the parse is failing. If you want to output now as a string in the ddMMyyy format, then try now.ToSTring("ddMMyyyy") instead.

now.ToString() does not return a string formatted in that way. Try using now.ToString("ddMMyyyy").
You might be better off testing with a static string like "30041999"

C# Asp.net Convert.toDateTime(datevalue) gives error with different cultureinfo need datepattern look like 5/1/2012 12:00:00 AM

In my Asp.net Website i have two textboxes (txtstartdate, txtenddate) applied JQquery Datepicker which popups gives date in format ("05/24/2012"). Work fine for cultureInfo("en-US"), when i change to ("de") ie German its give error "System.FormatException: String was not recognized as a valid DateTime.".
In my code behind file i am writing this code
string sDate = txtstartdate.Text; // 05/01/2012 (debugging gives this values)
string eDate = txtenddate.Text; // 05/24/2012 (debugging gives this values)
DateTime startdate = Convert.ToDateTime(sDate); // 5/1/2012 12:00:00 AM
DateTime enddate = Convert.ToDateTime(eDate); // 5/24/2012 12:00:00 AM
My requirement is datetime variable must give date of format 5/1/2012 12:00:00 AM whatever be the cultureinfo set doesnt matter to the date.So that i can execute select query in MsSql Server existing table having column datatype Datetime with data (5/1/2012 12:00:00 AM) formart
After Changing the CultureInfo (from Masterpage dropdownlist) Englsih to German gives error
Have tried this but not working
DateTime startdate = DateTime.ParseExact(sDate, "M/d/yyyy", null);
//tried also "MM/dd/yyyy"
Note: Set any cultileinfo, but the datetime pattern alwayz be 5/1/2012 12:00:00 AM ie en-US culture

You could try using "MM/dd/yyyy" as your format string when you call ParseExact, assuming that you're sure the input will always be in that format.
Alternatively, try using Convert.ToDateTime(yourString, CultureInfo.InvariantCulture) instead.

I think in this case you have to set the altFormat of your calendar to the format used by SQL server. Then, you can use a hidden field to store the altDate for each of your date pickers. When you submit, the value of the altField, in the correct format would be sent to your server instead of the culture-specific value that's displayed to the user.