In gridview showing date on label and fetching date from that label.
Datetime Date;
Label date = gvOrderExecuted.Rows[0].FindControl("lblDate") as Label;
Date = Convert.ToDateTime(date.Text);
This code throws an error
'String was not recognized as valid Date Time'.
I am passing value for date like '3/31/2015'
Convert.ToDateTime method uses DateTime.Parse method explicitly with your CurrentCulture settings if you don't provide any IFormatProvider.
Looks like that M/dd/yyyy is not a standard date and time format of your CurrentCulture and that's why it throws FormatException.
You can use DateTime.ParseExact or DateTime.TryParseExact methods to specify your custom string format like;
string s = "3/31/2015";
DateTime dt;
if(DateTime.TryParseExact(s, "M/dd/yyyy", CultureInfo.InvariantCulture,
DateTimeStyles.None, out dt))
{
Console.WriteLine(dt); // 31/03/2015 00:00:00
}
"/" separator has a special meaning as replace me with current culture or supplied culture date separator. That means, when you parse it a string with that separator, your parsing may fail even if your string and format matches exactly. You can escape this these character as '/' without worry about it.
string s = "3/31/2015";
DateTime dt = DateTime.ParseExact(s, "M'/'dd'/'yyyy", CultureInfo.CurrentCulture);
Related
I'm trying to parse a date string in mm/dd/yyyy to date type, but it triggers an error saying:
String was not recognized as a valid DateTime.
This is the code I'm using:
Dim mydate As Date
If filter = 4 Then
mydate = Date.ParseExact(datepart, "mm/dd/yy", System.Globalization.DateTimeFormatInfo.InvariantInfo)
End If
I don't understand what I did wrong, any help is appreciated.
You have two little errors in your format string:
DateTime mydate = DateTime.ParseExact("07/27/2016",
"MM/dd/yyyy",
System.Globalization.DateTimeFormatInfo.InvariantInfo);
Months are parsed by "MM" not "mm" (lower case is for minutes)
The four digit year is parsed by "yyyy" not "yy"
Your date format is wrong, use MM/dd/yyyy instead mm/dd/yy try below
Date.ParseExact(datepart, "MM/dd/yyyy", CultureInfo.InvariantCulture)
CultureInfo provider = CultureInfo.InvariantCulture;
// Parse date-only value with invariant culture.
string dateString = "06/15/2008";
string format = "d";
var result = DateTime.ParseExact(dateString, format, provider);
What is the right DateTime format to parse a date from string in general date format ("G") with optional time part ("d")?
I can have two types of dates:
"12/13/2012 6:30:00 PM"
"3/29/2013"
How to parse them in unified way?
Right now I'm trying to parse with "G" format and then if it not parsed with "d" format.
If your CurrentCulture supports MM/dd/yyyy h:mm:ss tt (I assume your LongTimePattern has h) and M/dd/yyyy (I assume your ShortDatePattern has M) as standard date and time format, using DateTime.TryParse(String, out DateTime) method can solve all your problems.
string s = "";
DateTime dt;
if (DateTime.TryParse(s, out dt))
{
// Your string parsed successfully.
}
If these formats doesn't standard date and time format for your CurrentCulture, using DateTime.TryParseExact(String, String[], IFormatProvider, DateTimeStyles, DateTime) overload can be the best choice because it takes formats part as a string array. That means, you can provide multiple formats and your string will be parsed with first successful match.
string s = "";
string[] formats = { "MM/dd/yyyy h:mm:ss tt", "M/dd/yyyy" };
DateTime dt;
if (DateTime.TryParseExact(s, formats, CultureInfo.CurrentCulture,
DateTimeStyles.None, out dt))
{
// Your string parsed with one of speficied format.
}
Be careful when you parse string that have "/" custom format specifier. It has a special meaning of replace me with current culture or specified culture date separator. That means if your CurrentCulture's DateSeparator property is not /, your parsing operation will fail even if your string and formats are the same format.
Just use DateTime.Parse() or if you want to do a safe parse attempt DateTime.TryParse()
DateTime dt1, dt2;
dt1 = DateTime.Parse("12/13/2012 6:30:00 PM");
dt2 = DateTime.Parse("3/29/2013");
OR
DateTime.TryParse("12/13/2012 6:30:00 PM", out dt1);
DateTime.TryParse("3/29/2013", out dt2);
You only have to use DateTime.ParseExact() or provide the format if it differs from the accepted formats that DateTime.Parse() accepts, or if you only allow one particular format.
I have a date which comes in a string like so:
09/25/2014 09:18:24
I need it like this (yyyy-mm-dd):
2014-09-25 09:18:24
The object that this date goes into is a nullable date.
Tried this does not work:
DateTime formattedDate;
bool result = DateTime.TryParseExact(modifiedDate, "yyyy-MM-dd",
CultureInfo.InvariantCulture,
DateTimeStyles.None,
out formattedDate);
Any clues?
Thanks in advance.
From DateTime.TryParseExact
Converts the specified string representation of a date and time to its
DateTime equivalent. The format of the string representation must
match a specified format exactly.
In your case, they are not. Use yyyy-MM-dd HH:mm:ss format instead.
string s = "2014-09-25 09:18:24";
DateTime dt;
if(DateTime.TryParseExact(s, "yyyy-MM-dd HH:mm:ss",
CultureInfo.InvariantCulture,
DateTimeStyles.None, out dt))
{
Console.WriteLine(dt);
}
It is a little bit unclear but if your string is 09/25/2014 09:18:24, then you can use MM/dd/yyyy HH:mm:ss format instead. Just a tip, "/" custom format specifier has a special meaning as replace me with current culture or supplied culture date separator. That means, if your CurrentCulture or supplied culture's DateSeparator is not /, your parsing operation will fail even if your format and string matches exactly.
If you have already a DateTime and you want to format it, you can use DateTime.ToString(string) method like;
dt.ToString("yyyy-mm-dd", CultureInfo.InvariantCulture); // 2014-09-25
or
dt.ToString("yyyy-mm-dd HH:mm:ss", CultureInfo.InvariantCulture); // 2014-09-25 09:18:24
Remember, a DateTime does not have any implicit format. It just contains date and time values. String representations of them have formats.
In answer to your question, to convert it as you prefer, do it like this:
string originalDate = "09/25/2014 09:18:24";
DateTime formattedDate;
if (DateTime.TryParseExact(originalDate, "MM/dd/yyyy HH:mm:ss", CultureInfo.InvariantCulture, DateTimeStyles.None, out formattedDate))
{
string output = formattedDate.ToString("yyyy-mm-dd HH:mm:ss", CultureInfo.InvariantCulture);
}
And then output will have your desired format.
DateTime dateOf = Convert.ToDateTime("09/25/2014 09:18:24");
string myFormat = "yyyy-mm-dd";
string myDate = dateOf.ToString(myFormat); // output 2014-18-25
Datetime format
A string has the value in "dd/MM/yyyy" format like "04/10/2012". This should be converted to a Date w.r.t Current Culture of OS.
I have tried below string with Korean as Current Culture of OS in which date format is yyyy-MM-dd, my code is not getting correct Month value, it interchange the month value with day:
Input: "04/10/2012"
Output: 2012-04-10
Code:
DateTime DT;
string dt = "04/10/2012";
DateTimeFormatInfo DateInfo = CultureInfo.CurrentCulture.DateTimeFormat;
DT = Convert.ToDateTime(String.Format ("{0:"+DateInfo .ShortDatePattern +"}", dt.Trim ()), CultureInfo .CurrentCulture);
MessageBox.Show("Date: " + DT.ToShortDateString());
How I can fix that ?
It looks to me like you need to parse it with a fixed format, I think you are currently parsing it with a format other than "dd/MM/yyyy" and because the date is ambiguous (as in, month and day can be interchanged without causing invalid dates) the format is simply switching the month and day value. When you then go to output it, it looks reversed.
Use DateTime.ParseExact to force the parsing format and then use the built-in current culture sensitive string output methods on DateTime to get a formatted string:
var date = DateTime.ParseExact("04/10/2012", "dd/MM/yyyy", CultureInfo.InvariantCulture);
MessageBox.Show("Date: " + date.ToShortDateString()); // Assumes current culture is controlling format
Since your input string is in a fixed format, you should parse it in that format:
DateTime.ParseExact(dt, "dd/MM/yyyy", CultureInfo.InvariantCulture);
If you string has the format dd/MM/yyyy then you have to use DateTime.ParseExact with the specified format:
DateTime.ParseExact(dt, "dd/MM/yyyy", CultureInfo.InvariantCulture);
Anything else will try an interpret the string according to the current culture's rules - which, as you have found, will fail.
why not use ToShortDateTimeString()
I have string having value "August-25-2011". How can I parse that into Datetime format?
Try:
DateTime dt = DateTime.ParseExact(
your_date,
"MMMM-dd-yyyy" ,
CultureInfo.InvariantCulture);
Try this out.
var date = DateTime.Parse("August-25-2011");
DateTime.ParseExact(
your_date,
"MMMM-dd-yyyy" ,
CultureInfo.InvariantCulture);
For TryParseExact
DateTime parsedDate;
string pattern = "MMMM-dd-yyyy" ;
DateTime.TryParseExact(dateValue, pattern, null,
DateTimeStyles.None, out parsedDate)
Converts the specified string representation of a date and time to its
DateTime equivalent using the specified array of formats,
culture-specific format information, and style. The format of the
string representation must match at least one of the specified formats
exactly. The method returns a value that indicates whether the
conversion succeeded.