The date format in an excel upload is returning this error.
{"String '6/3/2020 12:00:00 AM' was not recognized as a valid DateTime."}
I was able to fix the issue before here on stackoverflow(Check code) but today while testing the upload again, the problem persists. I have checked almost all the suggestions available on StackOverflow but none seem to be working.
On the excel sheet I have 6/3/2020 but in the code I got 6/3/2020 12:00:00 AM
I have been trying to fix this all day
for (int i = 2; i <= noOfRow; i++) //start from the second row
{
if (!string.IsNullOrEmpty(workSheet.Cells[i, 3].Text))
{
var date = workSheet.Cells[i, 3].Value.ToString();
//will throw exception if the fields in tenor are invalid
try
{
DateTime d = DateTime.ParseExact(date, "M/d/yyyy HH:mm tt", CultureInfo.InvariantCulture);
}
catch (Exception ex)
{
validationResult.Message = "Invalid Date.";
validationResult.IsValid = false;
validationResult.ErrorRowIndex = row;
logger.Error(validationResult.Message);
break;
}
}
else
{
validationResult.Message = "Empty Date.";
validationResult.IsValid = false;
validationResult.ErrorRowIndex = row;
logger.Error(validationResult.Message);
break;
}
++row;
}
return validationResult;
}
OK, here's your line of code:
DateTime d = DateTime.ParseExact(date, "M/d/yyyy HH:mm tt", CultureInfo.InvariantCulture);
And here is the date string you are trying to convert:
"6/3/2020 12:00:00 AM"
Notice how the date string contains hours, minutes, and seconds, but your format string only has hours and minutes. DateTime.ParseExact needs you to supply the exact format of the incoming string.
Try add seconds to format of date:
Replace
DateTime d = DateTime.ParseExact(date, "M/d/yyyy hh:mm tt", CultureInfo.InvariantCulture);
with
DateTime d = DateTime.ParseExact(date, "M/d/yyyy hh:mm:ss tt", CultureInfo.InvariantCulture);
How do you convert a string such as 2009-05-08 14:40:52,531 into a DateTime?
Since you are handling 24-hour based time and you have a comma separating the seconds fraction, I recommend that you specify a custom format:
DateTime myDate = DateTime.ParseExact("2009-05-08 14:40:52,531", "yyyy-MM-dd HH:mm:ss,fff",
System.Globalization.CultureInfo.InvariantCulture);
You have basically two options for this. DateTime.Parse() and DateTime.ParseExact().
The first is very forgiving in terms of syntax and will parse dates in many different formats. It is good for user input which may come in different formats.
ParseExact will allow you to specify the exact format of your date string to use for parsing. It is good to use this if your string is always in the same format. This way, you can easily detect any deviations from the expected data.
You can parse user input like this:
DateTime enteredDate = DateTime.Parse(enteredString);
If you have a specific format for the string, you should use the other method:
DateTime loadedDate = DateTime.ParseExact(loadedString, "d", null);
"d" stands for the short date pattern (see MSDN for more info) and null specifies that the current culture should be used for parsing the string.
try this
DateTime myDate = DateTime.Parse(dateString);
a better way would be this:
DateTime myDate;
if (!DateTime.TryParse(dateString, out myDate))
{
// handle parse failure
}
Use DateTime.Parse(string):
DateTime dateTime = DateTime.Parse(dateTimeStr);
Nobody seems to implemented an extension method. With the help of #CMS's answer:
Working and improved full source example is here: Gist Link
namespace ExtensionMethods {
using System;
using System.Globalization;
public static class DateTimeExtensions {
public static DateTime ToDateTime(this string s,
string format = "ddMMyyyy", string cultureString = "tr-TR") {
try {
var r = DateTime.ParseExact(
s: s,
format: format,
provider: CultureInfo.GetCultureInfo(cultureString));
return r;
} catch (FormatException) {
throw;
} catch (CultureNotFoundException) {
throw; // Given Culture is not supported culture
}
}
public static DateTime ToDateTime(this string s,
string format, CultureInfo culture) {
try {
var r = DateTime.ParseExact(s: s, format: format,
provider: culture);
return r;
} catch (FormatException) {
throw;
} catch (CultureNotFoundException) {
throw; // Given Culture is not supported culture
}
}
}
}
namespace SO {
using ExtensionMethods;
using System;
using System.Globalization;
class Program {
static void Main(string[] args) {
var mydate = "29021996";
var date = mydate.ToDateTime(format: "ddMMyyyy"); // {29.02.1996 00:00:00}
mydate = "2016 3";
date = mydate.ToDateTime("yyyy M"); // {01.03.2016 00:00:00}
mydate = "2016 12";
date = mydate.ToDateTime("yyyy d"); // {12.01.2016 00:00:00}
mydate = "2016/31/05 13:33";
date = mydate.ToDateTime("yyyy/d/M HH:mm"); // {31.05.2016 13:33:00}
mydate = "2016/31 Ocak";
date = mydate.ToDateTime("yyyy/d MMMM"); // {31.01.2016 00:00:00}
mydate = "2016/31 January";
date = mydate.ToDateTime("yyyy/d MMMM", cultureString: "en-US");
// {31.01.2016 00:00:00}
mydate = "11/شعبان/1437";
date = mydate.ToDateTime(
culture: CultureInfo.GetCultureInfo("ar-SA"),
format: "dd/MMMM/yyyy");
// Weird :) I supposed dd/yyyy/MMMM but that did not work !?$^&*
System.Diagnostics.Debug.Assert(
date.Equals(new DateTime(year: 2016, month: 5, day: 18)));
}
}
}
I tried various ways. What worked for me was this:
Convert.ToDateTime(data, CultureInfo.InvariantCulture);
data for me was times like this 9/24/2017 9:31:34 AM
Try the below, where strDate is your date in 'MM/dd/yyyy' format
var date = DateTime.Parse(strDate,new CultureInfo("en-US", true))
Convert.ToDateTime or DateTime.Parse
DateTime.Parse
Syntax:
DateTime.Parse(String value)
DateTime.Parse(String value, IFormatProvider provider)
DateTime.Parse(String value, IFormatProvider provider, DateTypeStyles styles)
Example:
string value = "1 January 2019";
CultureInfo provider = new CultureInfo("en-GB");
DateTime.Parse(value, provider, DateTimeStyles.NoCurrentDateDefault););
Value: string representation of date and time.
Provider: object which provides culture specific info.
Styles: formatting options that customize string parsing for some date and time parsing methods. For instance, AllowWhiteSpaces is a value which helps to ignore all spaces present in string while it parse.
It's also worth remembering DateTime is an object that is stored as number internally in the framework, Format only applies to it when you convert it back to string.
Parsing converting a string to the internal number type.
Formatting converting the internal numeric value to a readable
string.
I recently had an issue where I was trying to convert a DateTime to pass to Linq what I hadn't realised at the time was format is irrelevant when passing DateTime to a Linq Query.
DateTime SearchDate = DateTime.Parse(searchDate);
applicationsUsages = applicationsUsages.Where(x => DbFunctions.TruncateTime(x.dateApplicationSelected) == SearchDate.Date);
Full DateTime Documentation
string input;
DateTime db;
Console.WriteLine("Enter Date in this Format(YYYY-MM-DD): ");
input = Console.ReadLine();
db = Convert.ToDateTime(input);
//////// this methods convert string value to datetime
///////// in order to print date
Console.WriteLine("{0}-{1}-{2}",db.Year,db.Month,db.Day);
You could also use DateTime.TryParseExact() as below if you are unsure of the input value.
DateTime outputDateTimeValue;
if (DateTime.TryParseExact("2009-05-08 14:40:52,531", "yyyy-MM-dd HH:mm:ss,fff", System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.None, out outputDateTimeValue))
{
return outputDateTimeValue;
}
else
{
// Handle the fact that parse did not succeed
}
I just found an elegant way:
Convert.ChangeType("2020-12-31", typeof(DateTime));
Convert.ChangeType("2020/12/31", typeof(DateTime));
Convert.ChangeType("2020-01-01 16:00:30", typeof(DateTime));
Convert.ChangeType("2020/12/31 16:00:30", typeof(DateTime), System.Globalization.CultureInfo.GetCultureInfo("en-GB"));
Convert.ChangeType("11/شعبان/1437", typeof(DateTime), System.Globalization.CultureInfo.GetCultureInfo("ar-SA"));
Convert.ChangeType("2020-02-11T16:54:51.466+03:00", typeof(DateTime)); // format: "yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffzzz"
Put this code in a static class> public static class ClassName{ }
public static DateTime ToDateTime(this string datetime, char dateSpliter = '-', char timeSpliter = ':', char millisecondSpliter = ',')
{
try
{
datetime = datetime.Trim();
datetime = datetime.Replace(" ", " ");
string[] body = datetime.Split(' ');
string[] date = body[0].Split(dateSpliter);
int year = date[0].ToInt();
int month = date[1].ToInt();
int day = date[2].ToInt();
int hour = 0, minute = 0, second = 0, millisecond = 0;
if (body.Length == 2)
{
string[] tpart = body[1].Split(millisecondSpliter);
string[] time = tpart[0].Split(timeSpliter);
hour = time[0].ToInt();
minute = time[1].ToInt();
if (time.Length == 3) second = time[2].ToInt();
if (tpart.Length == 2) millisecond = tpart[1].ToInt();
}
return new DateTime(year, month, day, hour, minute, second, millisecond);
}
catch
{
return new DateTime();
}
}
In this way, you can use
string datetime = "2009-05-08 14:40:52,531";
DateTime dt0 = datetime.TToDateTime();
DateTime dt1 = "2009-05-08 14:40:52,531".ToDateTime();
DateTime dt5 = "2009-05-08".ToDateTime();
DateTime dt2 = "2009/05/08 14:40:52".ToDateTime('/');
DateTime dt3 = "2009/05/08 14.40".ToDateTime('/', '.');
DateTime dt4 = "2009-05-08 14:40-531".ToDateTime('-', ':', '-');
String now = DateTime.Now.ToString("YYYY-MM-DD HH:MI:SS");//make it datetime
DateTime.Parse(now);
this one gives you
2019-08-17 11:14:49.000
Different cultures in the world write date strings in different ways. For example, in the US 01/20/2008 is January 20th, 2008. In France this will throw an InvalidFormatException. This is because France reads date-times as Day/Month/Year, and in the US it is Month/Day/Year.
Consequently, a string like 20/01/2008 will parse to January 20th, 2008 in France, and then throw an InvalidFormatException in the US.
To determine your current culture settings, you can use System.Globalization.CultureInfo.CurrentCulture.
string dateTime = "01/08/2008 14:50:50.42";
DateTime dt = Convert.ToDateTime(dateTime);
Console.WriteLine("Year: {0}, Month: {1}, Day: {2}, Hour: {3}, Minute: {4}, Second: {5}, Millisecond: {6}",
dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, dt.Second, dt.Millisecond);
This worked for me:
CultureInfo provider = CultureInfo.InvariantCulture;
DateTime dt = DateTime.ParseExact("2009-05-08 14:40:52,531","yyyy-MM-dd HH:mm:ss,fff", provider);
Do you want it fast?
Let's say you have a date with format yyMMdd.
The fastest way to convert it that I found is:
var d = new DateTime(
(s[0] - '0') * 10 + s[1] - '0' + 2000,
(s[2] - '0') * 10 + s[3] - '0',
(s[4] - '0') * 10 + s[5] - '0')
Just, choose the indexes according to your date format of choice. If you need speed probably you don't mind the 'non-generic' way of the function.
This method takes about 10% of the time required by:
var d = DateTime.ParseExact(s, "yyMMdd", System.Globalization.CultureInfo.InvariantCulture);
For example, if the textbox contains 11/11/2016 OR 01/05/2016
How to get the day value only? example. 11 OR 01
One way is to parse the string in the TextBox to DateTime using an exact format. Then using the DateTime object, you can extract the Day Property:
DateTime date;
bool success = DateTime.TryParseExact(textBoxDate.Text, "dd/MM/yyyy",
CultureInfo.CurrentCulture,
DateTimeStyles.AssumeLocal, out date);
int day;
if(success)
{
day = date.Day; // 1
// or string stringDay = date.ToString("dd"); to get 01
}
else
{
// handle error
}
Another way that I don't prefer (Not 100% safe input validation) is to use String.Split like this:
string strDay = textBoxDate.Text.Split('/').FirstOrDefault();
int day;
if(Int32.TryParse(strDay, out day))
{
// success
}
else
{
// Handle Error
}
string myString = textbox1.text;
DateTime day = DateTime.ParseExact(myString, "dd/MM/yyyy", CultureInfo.InvariantCulture);
int day = birthday.Day;
I am going to say in advance, that I am a beginner in programming and this question might seem quite irrelevant. However, I truly wonder how to proceed in this situation.
This is my code:
string startdate;
Console.WriteLine("Please, type in your birthdate (dd-mm-yyyy)");
startdate = Console.ReadLine();
DateTime bday = DateTime.Parse(startdate);
// prob 1.
DateTime now = DateTime.Now;
TimeSpan ts1 = now.Subtract(bday);
DateTime dt = new DateTime(0001, 01, 01);
TimeSpan ts2 = new TimeSpan(365, 0, 0, 0);
//prob2.
TimeSpan ts3 = new TimeSpan(3650, 0, 0, 0);
dt = dt + ts1 - ts2;
Console.WriteLine("Your current age is:{0}", dt.ToString("yy"));
dt = dt + ts3;
Console.WriteLine("Your Age after 10 years will be:{0}", dt.ToString("yy"));
Problem 1: I would like to create a loop where if the info that is given in the console is different from dd-mm-yyyy, to repeat the whole process again.
Problem 2: I would like to see whether the next year(from the current one) is a leap year, and thus know whether ts2 should be 365 days or 366.
Thank you in advance.
Re. Problem 1:
Take a look at DateTime.TryParseExact: this allows you to specify a format, and rather than throwing an exception returns false on the input format not matching. Thus
DateTime res;
String inp;
do {
inp = Console.ReadLine("Date of birth: ");
} while (!DateTime.TryParseExact(inp, "yyyy-MM-dd", CultureInfo.CurrentCulture, DateTimeStyles.None, out res));
Re, Problem 2: See DateTime.AddYears as noted in the comments on the Q.
The Leap year problem is not really a problem thanks to the Framewrok
int daysToAdd = 0;
for(int i = 1; i <= 10; i++)
daysToAdd += (DateTime.IsLeapYear(DateTime.Today.Year + i) ? 366 : 365);
The first problem could be solved with
DateTime inputDate;
while(true)
{
Console.WriteLine("Please, type in your birthdate (dd-mm-yyyy)");
string startdate = Console.ReadLine();
if(DateTime.TryParseExact(startdate, "dd-MM-yyyy", CultureInfo.CurrentCulture, DateTimeStyles.None, out inputDate))
break;
}
Problem 1:
That can be solved using a while loop.
while(!DateTime.Parse(startdate))// The "!" is for NOT
{
Console.WriteLine("Incorrect format please type your birthday again(dd-mm-yyyy)");
startdate = Console.ReadLine();
}
However this brings up another problem DateTime.Parse will throw an error when the string is incorrect.(http://msdn.microsoft.com/en-us/library/1k1skd40%28v=vs.110%29.aspx)
In order to solve this you need to do use a try catch clause in order to "catch" the error.
See more details here(http://msdn.microsoft.com/en-us/library/0yd65esw.aspx)
Therefore the code will look like this:
bool isCorrectTime = false;
while(!isCorrectTime) // The "!" is for NOT
{
try
{
Console.WriteLine("Incorrect format please type your birthday again(dd-mm-yyyy)");
startdate = Console.ReadLine();
isCorrectTime = true; //If we are here that means that parsing the DateTime
// did not throw errors and therefore your time is correct!
}
catch
{
//We leave the catch clause empty as it is not needed in this scenario
}
}
For problem 2 see Steve's answer.
How do I covert JavaScript string "5:00 PM" to DateTime or TimeSpan when it get send to the MVC controller. I am using
bootstrap-timepicker
// usage
<script type="text/javascript">
$('#timepicker1').timepicker();
</script>
Javascript payload
{
Skip: 0
Status: []
Take: 15
DueTime: "1:00 PM" // keep in mind that this is a string
}
Server Object would be something like
class TimeSheet
{
public TimeSpan DueTime;
}
Use DateTime.Parse. Convert on server(on controller) when your string would transmit with your time.
http://msdn.microsoft.com/ru-ru/library/system.datetime.parse(v=vs.110).aspx
Okay so I read everyhting wrong hence the deleted answer.. !
But I'm not giving up ;)
Your bootstrap-timepicker, will give you a time as this "1:00 PM".
But before that we are going to look on the serverside to see what we can parse into a datetime object.
This is C# for parsing datetime.
string dateString, format;
DateTime result;
CultureInfo provider = CultureInfo.InvariantCulture;
dateString = "15/08/2000 16:58"
format = "dd/MM/yyyy HH:mm"
result = DateTime.ParseExact(dateString, format, provider);
Now as you se your string wont look like that I'm going to assume that you want todays date!
This is function I tend to use most of the times when converting, to 24H clock.
function ConvertTimeformat(str) {
var time = str;
var hours = Number(time.match(/^(\d+)/)[1]);
var minutes = Number(time.match(/:(\d+)/)[1]);
var AMPM = time.match(/\s(.*)$/)[1];
if (AMPM == "PM" && hours < 12) hours = hours + 12;
if (AMPM == "AM" && hours == 12) hours = hours - 12;
var sHours = hours.toString();
var sMinutes = minutes.toString();
if (hours < 10) sHours = "0" + sHours;
if (minutes < 10) sMinutes = "0" + sMinutes;
//Creating the todays date in the right format
var today = new Date();
var dd = today.getDate();
var mm = today.getMonth()+1;//January is 0!`
var yyyy = today.getFullYear();
if(dd<10){dd='0'+dd}
if(mm<10){mm='0'+mm}
var todaysdate = dd+'/'+mm+'/'+yyyy +" " ; //<--I added an extra space!
var hoursNminutes = sHours + ":" + sMinutes
//CREATE THE RIGHT FORMAT FOR DATE.PARSEXACT "dd/MM/yyyy HH:mm"
var dateToParse = todaysdate + hoursNminutes
return dateToParse;
}
To Use the function do like this!
//Call it and provide your bootstrap time. And make it return to a variable
var dateToBeSentToServer = ConvertTimeformat("1:00 PM");
//OR With the bootstraptime as a variable
var dateToBeSentToServer = ConvertTimeformat(timevariable);
Now you can send dateToBeSentToServer to your serverside for parsing!