I have two textBox in first i have Date in this format : 2012.09.20 and in the second i have Time in this format: 15:30:00. In database i have Column name "Eventstart" type: DateTime. Now i like to take the value from two textbox and put them in something like this:
DateTime end = Convert.ToDateTime(TextBoxEnd.Text) + Convert.ToDateTime(TextBoxTimeEnd.Text);
But give me this error : Error 2 Operator '+' cannot be applied to operands of type 'System.DateTime' and 'System.DateTime'
It sounds like you should be using:
DateTime date = Convert.ToDateTime(TextBoxEnd.Text);
DateTime time = Convert.ToDateTime(TextBoxTimeEnd.Text);
DateTime combined = date.Date + time.TimeOfDay;
Or you could combine the text and then parse that:
DateTime dateTime = Convert.ToDateTime(TextBoxEnd.Text + " " +
TextBoxTimeEnd.Text);
I'm not sure I'd use Convert.ToDateTime at all though - if you know the exact format that the textbox will be in, you should use DateTime.TryParseExact. You should work out which culture to use in that case though. If it's a genuinely fixed precise format, CultureInfo.InvariantCulture might be appropriate. If it's a culture-specific format, then use the user's culture.
You might also want to use an alternative UI representation which doesn't use textboxes at all, which would avoid potentially troubling string conversions.
Concatenate your TextBoxes text and use DateTime.ParseExact with format "yyyy.MM.dd HH:mm:ss"
After concatenating the text you should have: "2012.09.20 15:30:00"
DateTime dt = DateTime.ParseExact(TextBoxEnd.Text + " " + TextBoxTimeEnd.Text,
"yyyy.MM.dd HH:mm:ss",
CultureInfo.InvariantCulture);
Have you tried something like
DateTime end = Convert.ToDateTime(TextBoxEnd.Text) + TimeSpan.Parse(TextBoxTimeEnd.Text);
First concatenate both the values and then add it to a DateTime variable
example:
string str = date.Text + time.Text; // assumed date and time are textboxes
DateTime dt=new DateTime();
DateTime.TryParse(str,dt); // returns datetime in dt if it is valid
Related
I need "24/01/2012" but Why it always returns "24/1/2012"
when I am using this
txtFilingStartDate.Text = String.Format("{0:dd/MM/yyyy}", (SessionHelper.SearchFilingStartDate.Value.Day.ToString() + "/" + SessionHelper.SearchFilingStartDate.Value.Month.ToString() + "/" + SessionHelper.SearchFilingStartDate.Value.Year.ToString()));
Just do with this :
txtFilingStartDate.Text = String.Format("{0:dd/MM/yyyy}",SessionHelper.SearchFilingStartDate.Value);
SessionHelper.SearchFilingStartDate.Value seems to be a DateTime value.
Then pass it directly without all that string conversions for day, months and year.
txtFilingStartDate.Text = String.Format("{0:dd/MM/yyyy}",
(SessionHelper.SearchFilingStartDate.Value);
The format string "dd/MM/yyyy" contains enough information to allow the Format method to prepare the resulting string directly from your DateTime value
You don't need the String.Format statement. You can do it with the Date's ToString method:
txtFilingStartDate = SessionHelper.SearchFilingStartDate.ToString.Value("dd/MM/yyyy");
There's a lot more information on the MSDN page for Custom Date and Time Format Strings
You are passing a string and the format you specified for it is unrecognized. Assuming that this is a datetime you are passing, don't do all that conversion first:
txtFilingStartDate.Text = String.Format("{0:dd/MM/yyyy}", SessionHelper.SearchFilingStartDate.Value)
When you format a string using a date/time formatting ({0:dd/MM/yyyy}) themethod is expecting an instance of DateTime, you are passing it a string
You probably want simply:
txtFilingStartDate.Text = String.Format("{0:dd/MM/yyyy}",SessionHelper.SearchFilingStartDate.Value);
I have the following simple example:
string dt = DateTime.Now.ToString("yyyy-MM-dd hh.mm.ss");
I can't change the DateTime.Now, but I can change datetime format yyyy-MM-dd hh.mm.ss. Following this example the result must be today's date, but I need to get yesterday's date with the same parameters except day (year, month, hours, minutes and seconds). E.g. 2015-08-23 12.09.59 must be 2015-08-22 12.09.59. So is it possible to use some "-" operator or something else inside the datetime format to achieve the result?
If you want yesterday's date, you can do this
string dt = DateTime.Now.AddDays(-1).ToString("yyyy-MM-dd hh.mm.ss");
DateTime.AddDays() lets you add number of days, positive for future date, negative for past date.
E.g. 2015-08-23 12.09.59 must be 2015-08-22 12.09.59. So is it
possible to use some "-" operator or something else inside the
datetime format to achieve the result?
No, it's not possible inside the DateTime format. you can not change any thing. Because it is only for define format of the Date to display in string format. Any addition or subtraction can only be done before converting it to string format as suggested by "Arghya C".
Can you explain your limitation so we can solve your problem.
If you can only influence the date time pattern, than use the roundtrip format and parse the returning string back to a date time, add the calculation and format it into the desired format:
var dateTimeString = badLibrary.GetDateTime("o");
var dateTime = DateTime.Parse(dateTimeString, null, DateTimeStyles.RoundtripKind);
var newDateTime = dateTime.AddDays(-1);
return newDateTime.ToString("yyyy-MM-dd hh.mm.ss");
I have two parameters one for date and another for time, and i need date value part and time values part.
My two parameters are below.
// For Date parameter
DateTime dt = DateTime.ParseExact("01-jan-1999", "dd-MMM-yyyy", CultureInfo.InvariantCulture);
bo.Dateused5 = dt;
// For Time parameter
string Fromtiming = ddl_FromHours.SelectedItem.ToString() + ":" + ddl_FromMinutes.SelectedItem.ToString();
DateTime InterviewTime = Convert.ToDateTime(Fromtiming);//StartTime
bo.Dateused4 = InterviewTime;//InterviewTime
so i need to send mail to the candidate to only date part, should not contain time and time part, should not contain date.
are you looking for this:
DateTime dt = DateTime.ParseExact("01-jan-1999", "dd-MMM-yyyy", CultureInfo.InvariantCulture);
string mailDate = dt.ToString("dd-MMM-yyyy");// will give 01-jan-1999
string date = dt.ToString("dd-MM-yyyy"); // will give 01-01-1999
You can also try using String.Format()
string mailDate = String.Format("{0:dd-MM-yyyy}", dt); // will give 01-01-1999
You can use ToShortDateString():
DateTime dt = DateTime.ParseExact("01-jan-1999", "dd-MMM-yyyy", CultureInfo.InvariantCulture);
var date = dt.ToShortDateString();
Note that it uses date format attached to the current thread's culture info.
You would need to use strings rather than dates, so change the type of your variables to string so that
bo.Dateused5 = dt.ToString("dd-MMM-yyyy")
would set Dateused5 to a string of the date component, then
bo.Dateused4 = InterviewTime.ToString("HH:MM");
would set Dateused4 to the time component.
Couldn't test your code but I am very sure there are Functions "DateValue" and "TimeValue" you can make use of.
Something like,
Format(DateValue(any datetime), "dd-MM-yyyy")
gives you Only Date in the specified format. Similar way for TimeValue
Is it possible to force a DateTime object to use a different locale? I wish to populate a DateTime object with a UK DateTime but formatted as US.
I have tried the following:
DateTime ukDateTimeFormat = DateTime.Parse("10/26/2009 06:47", CultureInfo.GetCultureInfo("en-us"));
DateTime usDateTimeFormat = DateTime.Parse("26/10/2009 06:47", CultureInfo.GetCultureInfo("en-gb"));
string strDate = DateTime.Now.ToString(CultureInfo.InvariantCulture);
string[] dateString = strDate.Split('/');
DateTime enterDate = DateTime.Parse(dateString[0] + "/" + dateString[1] + "/" + dateString[2], CultureInfo.GetCultureInfo("en-us"));
Nothing works, I always end up with a UK formatted date.
Any help would be much appreciated :-)
It seems like you're confused between representing a date-time and formatting a date-time.
DateTime does not contain any format, it only represents the actual time. So the question about a US/UK format of a DateTime is meaningless.
If you want to display the time in a different format, that's not a DateTime, that's a string. You can use the various overloads of DateTime.ToString(...) in order to achieve different formatting as a string. There are some built-in formats, and you can specify a locale.
The DateTime object does not have an internal string format as such - your date is stored as a date and formatted on output. You can populate however you wish, however when outputting it, you'll need to specify your format, e.g.:
string formattedDate = ukDateFormat.ToString("MM/dd/yyyy HH:mm");
To format your date for the locale, use this code:
string formattedDate = ukDateFormat.ToString(System.Globalization.CultureInfo.CreateSpecificCulture("en-us"))
How to convert C# Datetime.Today, into Timestamp format 10/20/2011 12:00:00 in mysql?
If you want to get the date time as a string in that format then you can do...
string dt = DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss");
See here for extra formatting options for the DateTime ToString method
Though from my understanding of MySQL it will accept a timestamp in the format yyyy-MM-dd HH:mm:ss. I would recommend doing this as it will ensure dates like 05/08/2011 are parsed correctly for the right month and day...
string dt = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
Try this:
DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss");
and if you want more/other time formats, check this.
You can use something like following and use return value as timestamp for Sql.
public static string GiveMeTimestamp(DateTime value)
{
return value.ToString("yyyy/MM/dd HH:mm:ss:ffff");
}
Use the overloaded ToString method which takes a string argument for the format.
This Possibly may assist someone with the same approach and thought that I had:
To test directly in MYSQL Workbench:
INSERT into tblDemo VALUES (898,CURRENT_TIMESTAMP());
create table tblDemo (ScenarioID INT(10),
ProcessTime DATETIME DEFAULT CURRENT_TIMESTAMP() NOT NUll);
Now compile the string in your C# Code like so:
string query = "INSERT into tblDemo " +
"VALUES (" + ScenarioID + "," + " CURRENT_TIMESTAMP())";
Note the CURRENT_TIMESTAMP() in quotes in the above query
Output:
'2021-03-04 17:52:30'