I have a datetime column in my SQL Server table which contains value like:
2021-01-27 00:00:00.000
When I fetch values from table my DataSet for this certain field is now like
27.1.2021. 0:00:00
I would like to convert this value to another format but what I get is exception
Additional information: String was not recognized as a valid DateTime.
Code:
DateTime dt = DateTime.ParseExact(row["DO_Date"].ToString(), "DD.m.YYYY. H:mm:ss", CultureInfo.InvariantCulture);
Why there is difference between value in table and then later in dataset? How to determine correct format and convert given datetime?
row["DO_Date"].ToString() returns a string which depends on your local system regional datetime setting.
Try doing the following:
DateTime dt = DateTime.ParseExact(row["DO_Date"].ToString("yyyy-MM-dd HH:mm:ss"), "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture);
In other words - force the source format to be the same as the one you are trying to convert to.
There is a simpler way though:
DateTime dt = (DateTime)row["DO_Date"]
Related
I have a date string with dd/mm format like 06/03.Now i have to store this string into mysql table column with DATETIME format.
I am getting the problem as How can i add the current year generically because i don't want to hard code it.Subsequently how will i convert it into MySql DATETIME format for saving it.
Please help me .
You can use Parse method of DateTime:
DateTime dateTime = DateTime.Parse("06/03");
UPDATE
For your comment:
Also after parsing into DateTime i am getting date correct but time i
dont want to be 12:00:00 AM instead i want it to be 00:00:00.
12:00:00 AM corresponds to 00:00:00 only. You can verify that by getting Hour property which will return 0 and also TimeOfDay will too return 00:00:00.
Even if you try to parse exact date, it also creates the same format.
DateTime dateTime = DateTime.ParseExact("06/03 00:00:00", "dd/MM hh:mm:ss",
CultureInfo.InvariantCulture);
And you don't need conversion from DateTime object to SQL compliant DateTime object. You can pass the .Net object to SQL writer.
Consider the code:
C#
string s = "06/03";
System.DateTime dateNow = Convert.ToDateTime(s);
will give the output as you required
in VB.Net :
Dim s As String = "06/03"
Dim dateNow As Date = CDate(s)
MsgBox(dateNow)
You could do something like
var some_date = "06/03";
var year = DateTime.Now.Year;
var option = some_date+"/"+year;
Or use any of the string formats to bend it to your needs
More on date string format can be found on this MSDN page.
Edit:
If you want zeroes in the time, like your comment said, you can usit Rohit vats answer and do:
DateTime dateTime = DateTime.Parse("06/03");
var s1 = dateTime.ToString("MM/dd/yy 00:00:00");
// Output: 03/06/14 00:00:00
var s2 = dateTime.ToString("MM/dd/yyyy 00:00:00");
// Output: 03/06/2014 00:00:00
How to change the date format in c#,i am retrieving the information from database,in database the date format its stored in "dd/mm/yyyy",but when i getting this date to my form,its showing error,the string is not a valid datetime format. for eg "2/13/2014" while i getting error when i retrieving this date,i have tried this code
string orderd = row.Cells[1].Value.ToString();
DateTime dt = Convert.ToDateTime(lbl_date.Text);
DateTime orderdt = Convert.ToDateTime(orderd);
how to convert this date while retrieving.,
string orderd = row.Cells[1].Value.ToString();
DateTime orderdt = Convert.ToDateTime(orderd);
this code also grtting error,the row.cells[1].value is that i am getting the value from gridview,then i am converting into datetime.,but the showing "String was not recognized as a valid DateTime."
If you have a date string in the format of dd/MM/yyyy then it's definitely not going to parse as yyyy-MM-dd so the error you see is correct.
I think what you are looking for is to parse the date in it's current format i.e.
DateTime orderdt = DateTime.ParseExact(orderd, "dd/MM/yyyy",
System.Globalization.CultureInfo.InvariantCulture);
but display the date as yyyy-MM-dd
orderdt.ToString("yyyy-MM-dd")
Have a look at MSDN. This documention includes many ways to format dates.
http://msdn.microsoft.com/en-us/library/az4se3k1(v=vs.110).aspx
hi i have datetime format in database like this
1/18/2014 4:14:52 PM (M/DD/YYYY h/mm/ss)
i convert it to ToLongDateString
string date = Convert.ToDateTime(myQuizOccurrence.occurred).ToLongDateString();
**result ->** **Sunday, January 12, 2014**
i want to convert back again that result date to become same format as database i wonder how to do it?
edited
so far i already try as #matt says using datetime instead string
DateTime dt2 = (DateTime) myDataGridView.CurrentRow.Cells[3].Value;
i already check it's have same format as datetime in database
but when i try to matching in query with this following code
Global.dbCon.Open();
string kalimatsql2 = "SELECT * FROM Quiz_Occurrences WHERE Occurred = " +dt2+ "
ORDER BY ID";
Global.reader = Global.riyeder(kalimatsql2);
if (Global.reader.HasRows) {
while (Global.reader.Read()) {
int idku = Convert.ToInt32(Global.reader.GetValue(0));
MessageBox.Show(idku.ToString());
}
}
Global.dbCon.Close();<br>
it's give error result
Syntax error (missing operator) in query expression 'Occurred = 1/12/2014 4:18:59 PM'
what i'm missing?
The vast majority of databases you will interact with should be accepting either a DateTime or a DateTimeOffset type directly. You would not use a string when retrieving data from the database, nor when sending data back to it. Therefore, format is irrelevant.
My guess is you are doing something similar to this:
DateTime dt = Convert.ToDateTime(mydatareader["MyDateTime"].ToString());
Instead you should be doing this:
DateTime dt = (DateTime) mydatareader["MyDateTime"];
When you save it back to the database, you should be using parameratized inputs that will take the DateTime directly. If you're trying to concatenate a string to build an SQL statement, you're doing it wrong.
i have datetime format in database like this
The best practice is to store date and time information with DateTime or DateTimeOffset type.
To convert back your string to DataTime you can use this:
string str = "Sunday, January 12, 2014";
var dateTime = DateTime.ParseExact(str, "D", CultureInfo.CurrentCulture);
Note that you loss the time part when you convert it to long date.
I am trying to convert a string into a DateTime and change its format from 05/06/2012 12:00:00 to 2012-06-05 12:00:00.000 to search in the database (SQL Server 2008 R2) DATETIME column type. The original date is coming from a calendar!
I tried this:
string Datereturn = row.Cells[9].Text;
DateTime dategiven = DateTime.ParseExact(Dategiven,
"YYYY-MM-DD hh:mm:ss[.nnn]", CultureInfo.InvariantCulture);
but it pops an error of invalid datetime
To parse 05/06/2012 12:00:00:
DateTime dategiven = DateTime.ParseExact(Dategiven,
"dd/MM/yyyy hh:mm:ss", CultureInfo.InvariantCulture);
To get a different formatted string:
string newFormat = dateGive.ToString("yyyy-MM-dd hh:mm:ss");
I suggest reading Custom Date and Time Format Strings on MSDN.
Also the different between parsing and formatting (in regards to DateTime):
Parsing means taking a string representing a datetime and getting a DateTime object from it
Formatting a DateTime is taking a DateTime object and getting a string from it, formatted as needed.
Can you try this
DateTime dategiven = DateTime.ParseExact(Dategiven, "dd/MM/yyyy hh:mm:ss", CultureInfo.InvariantCulture);
I have googled alot and tried lot of solutions but nothing is working for me.For Ex i Have tried below :
public static DateTime ParseDateToSystemFormat(DateTime date)
{
IFormatProvider culture = new CultureInfo("en-GB", true);
DateTime dt = DateTime.ParseExact(date.ToString("dd/MM/yyyy"),
"dd/MM/yyyy",
culture,DateTimeStyles.NoCurrentDateDefault);
return Convert.ToDateTime(dt,culture);
}
If anyone have solved this please let me know.
Date objects do not have formatting associated to them - you only use formatting for display.
When it is time to display the DateTime object, use either custom or standard format strings to format the display to your liking.
What you are doing here:
DateTime dt = DateTime.ParseExact(date.ToString("dd/MM/yyyy"),
"dd/MM/yyyy",
culture,DateTimeStyles.NoCurrentDateDefault);
Is rather strange - you are getting a specific string representation of your DateTime - date.ToString("dd/MM/yyyy"), then parsing that string back to a DateTime object. A bit of a long way to say DateTime dt = date;, with clearing out the hours/minutes/seconds data.
If you simply want the date portion of a DateTime, use the Date property. It produces:
A new object with the same date as this instance, and the time value set to 12:00:00 midnight (00:00:00).
The internal representation of a DateTime is always the same. There is no formatting attached to a DateTime object.
If it is only a display problem, then convert the DateTime to a string and display that string. You already know how to do it: Using ToString and specifying the format you want to have.