I have a win form c# SQL app that stores date in one column and time in the another.
There is only one date time picker on my form and I want to display both date and time values (which are from two separate columns)..
So far this is what I've done
Datetime final = datetime. Parse exact (date + " " + time , "MM/dd/yyyy hh:mm tt", cultureinfo. Invariant culture);
But it throws " string was not recognized as valid datetime" exception on the above line.
If date and time are DateTime variables, you can combine them with date arithmetic:
DateTime date=...;
DateTime time = ...;
DateTime finalDate = date.Date + time.TimeOfDay;
If they are strings, you can parse them to DateTime and TimeSpan variables:
DateTime date=DateTime.ParseExact(dateString,dateFormat,CultureInfo.InvariantCulture);
TimeSpan time = TimeSpan.ParseExact(timeString,timeFormat,CultureInfo.InvariantCulture);
DateTime finalDate = date.Date + time;
This is possible because you can add a DateTime and a TimeSpan value to get a new DateTime value
You can use TimeSpan.Parse to parse
DateTime newDateTime = date.Add(TimeSpan.Parse(time));
string d = DateTime.Now.Date.ToString("dd/MM/yyyy");
string t = DateTime.Now.ToString("h:mm");
var ts = TimeSpan.ParseExact(t, #"h\:mm",CultureInfo.InvariantCulture);
DateTime result = DateTime.ParseExact(d, "dd/MM/yyyy", CultureInfo.InvariantCulture)+ts;
Hope this helps,
Thanks.
Related
I have a project that contain 3 string variables.
DateFormatStr is the format string I need to use to output dates.
DateFormatFrom is the start date a request will apply from
FilloutDateTo is the end date the request will apply to.
The problem is that I don't want to manually specify the dates. As you can see in my example below (a working example), I need to specify the dates, but is there a way to make it that the from date has time 00:00:00 and the end date has time 23:59:59?
string DateFormatStr = "MM/dd/yy hh:mm:ss tt";
string DateFormatFrom = "12/04/14 00:00:00";
string FilloutDateTo = "12/04/14 23:59:59";
So I would like to the system time to recognize the from date and the start date respecting the formatStr variable.
Thanks
If I understand correctly, you can use DateTime.Today property like;
var dt1 = DateTime.Today;
var dt2 = DateTime.Today.AddDays(1).AddSeconds(-1);
and use DateTime.ToString() to format them like;
var DateFormatFrom = dt1.ToString("MM/dd/yyyy HH:mm:ss", CultureInfo.InvariantCulture);
var FilloutDateTo = dt2.ToString("MM/dd/yyyy HH:mm:ss", CultureInfo.InvariantCulture);
Results will be;
12/04/2014 00:00:00
12/04/2014 23:59:59
You used hh format specifier but it is for 12-hour clock. Use HH format specifier instead which is for 24-hour clock. And since your result strings doesn't have any AM/PM designator, you don't need to use tt format specifier.
In C# 6.0 you can use string interpolation in order to display formatted dates.
DateTime startOfDay = DateTime.Today;
DateTime endOfDay = DateTime.Today.AddDays(1).AddTicks(-1);
string dateFormatFrom = $"{startOfDay: MM/dd/yy hh:mm:ss tt}";
string filloutDateTo = $"{endOfDay: MM/dd/yy hh:mm:ss tt}";
string idate = "01/11/2019 19:00:00";
DateTime odate = Convert.ToDateTime(idate);
DateTime sdate1 = DateTime.Parse(idate);
string outDate1 = String.Format("{0}/{1}/{2}", sdate1.Day, sdate1.Month,sdate1.Year);
Console.WriteLine(outDate1);
string final = Convert.ToString(DateTime.Parse(date, System.Globalization.CultureInfo.InvariantCulture) + TimeSpan.Parse(duration));
Hi, I use the above code to add two date's to eachother. It do work very well on Windows and returns the required format yyyy-MM-dd HH:mm:ss in a correct fashion. HOWEVER, when on Linux building with Mono it returns the following format dd/MM/yyyy HH:mm:ss which is not what I want.
How can I specify that I ONLY want the first formatting and nothing else? I tried playing around with ParseExact but it did not do very well. What I've heard ParseExact should not really be needed for this?
Here is a example of input:
string date = "2014-10-30 10:00:04"; // On windows
string duration = "05:02:10"; // duration to be added to date
Greetings.
Use ToString("yyyy-MM-dd HH:mm:ss") instead of Convert.ToString.
string date = "2014-10-30 10:00:04";
string duration = "05:02:10";
DateTime dt1 = DateTime.Parse(date, CultureInfo.InvariantCulture);
TimeSpan ts = TimeSpan.Parse(duration, CultureInfo.InvariantCulture);
DateTime dtFinal = dt1.Add(ts);
string final = dtFinal.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture);
Convert.ToString uses your current culture's date separator, use CultureInfo.InvariantCulture.
Read: Custom Date and Time Format Strings
You can use the ToString() Method of the DateTime object.
var dt = DateTime.Now;
dt.ToString("yyyy-MM-dd HH:mm");
Using your code:
string _final = (DateTime.Parse(date, System.Globalization.CultureInfo.InvariantCulture) + TimeSpan.Parse(duration)).ToString("yyyy-MM-dd HH:mm:ss");
How do I form the DateTime with the proper value from two strings? For example, I have a textbox for the date with input like '06/25/2014' & another textbox for the time with input like '23:59'. I am trying to concatenate these two textbox values to form a DateTime variable with value of combined result as '2014-06-25 23:59:00.000'
I have written this code but get this error:
String was not recognized as a valid DateTime
string StartDate = Convert.ToString(txtOffBarDate.Text);
string StartTime =Convert.ToString(txtOffbarTime.Text);
DateTime StartDateTime = Convert.ToDateTime(StartDate + " " + StartTime);
DateTime startDateTime =DateTime.Parse(string.Format("{0} {1}",txtOffBarDate.Text,txtOffbarTime.Text),yourCultureInfo);
EDIT
To populate yourCultureInfo: CultureInfo.GetCultureInfo("en-US");
Convert.ToDateTime method uses standard date and time patterns of your current thread culture.
Looks like yyyy-MM-dd HH:mm:ss.fff is not standard date and time format for your CurrentCulture.
You can use DateTime.TryParseExact or DateTime.ParseExact methods to parse your custom date and time string.
Here an example on LINQPad;
string s = "2014-06-25 23:59:00.000";
DateTime dt;
if(DateTime.TryParseExact(s, "yyyy-MM-dd HH:mm:ss.fff",
CultureInfo.InvariantCulture,
DateTimeStyles.None, out dt))
{
dt.Dump();
}
Next time, if you have a question about globalization issues, please provide your CurrentCulture as well.
You can simply use:
DateTime StartDateTime ;
DateTime.TryParse(StartDate + " " + StartTime,out StartDateTime );
I am making a web page in that I have used Ajax calendar to pick two date like TO date and From date and I also have a Textbox of total days.
So when user selects to and from dates, the difference of these dates is displayed in the textbox. So how can I find the difference of these dates..?
I set the format like dd/MM/yyyy.
e.g.
one textbox has: 20/04/2012
second has : 02/05/2012
So, please find difference on these ?
Thanks in Advance....
Mitesh
Substraction operator (-) works on DateTime
DateTime to_datetime = DateTime.ParseExact(to_textbox.Text, "dd/MM/yyyy",
CultureInfo.InvariantCulture);
DateTime from_datetime = DateTime.ParseExact(from_textbox.Text, "dd/MM/yyyy",
CultureInfo.InvariantCulture);
Timespan result = to_datetime - from_datetime;
You can use it as
textBox1.Text = (to_datetime - from_datetime).TotalDays.ToString();
Convert your textbox values to date using:
DateTime dt1 = DateTime.ParseExact(textbox1.Text, "d/M/yyyy", CultureInfo.InvariantCulture);
DateTime dt2 = DateTime.ParseExact(textbox2.Text, "d/M/yyyy", CultureInfo.InvariantCulture);
Use TimeSpane
TimeSpan ts = dt1.Subtract(dt2);
Console.Write(ts.TotalDays);
textBox3.Text = ts.TotalDays;
Assuming C# code: DateTime support "-" that results in TimeSpan object.
DateTime nowTime = DateTime.Now;
DateTime yesterday = nowTime.AddDay(-1);
TimeSpan diff = nowTime - yesterday;
DateTime date1 =DateTime.ParseExact("20/04/2012","d/M/yyyy",null);
DateTime date2 = DateTime.ParseExact("02/05/2012", "d/M/yyyy", null);
TimeSpan datediff = date2 - date1;
Response.Write(datediff.ToString());
How can I convert MM/DD/YYYY HH:MI:SS AM/PM into DD/MM/YYYY using C# ?I am using C#2008.
Thanks
Use TryParseExact to parse to a DateTime, then ToString with a format string to convert back...
DateTime dt;
if (DateTime.TryParseExact(value, "MM/dd/yyyy hh:mm:ss tt",
CultureInfo.InvariantCulture, DateTimeStyles.None,
out dt))
{
string text = dt.ToString("dd/MM/yyyy", CultureInfo.InvariantCulture);
// Use text
}
else
{
// Handle failure
}
As the time part is irrelevant, you can truncate that before parsing and re-formatting:
date = DateTime.ParseExact(date.Substring(0, 10), "MM'/'dd'/'yyyy", CultureInfo.InvariantCulture).ToString("dd'/'MM'/'yyyy");
Edit:
As your comment reveals that you don't want a string as result, you should not format the date into a string, just get the date as a DateTime value:
Datetime dbDate = DateTime.ParseExact(date.Substring(0, 10), "MM'/'dd'/'yyyy", CultureInfo.InvariantCulture);
Now you can use the DateTime value in your code, wrapping it in a database driver type if needed.
If this is a DateTime object, you should be able to just select a different format.
If it is a string, use the following:
public string convert(string date){
string[] pieces = date.Split("/");
string day = pieces[1];
string month = pieces[0];
string year = pieces[2].split(" ")[0];
return day + "/" + month + "/" + year;
}