Develop Reference

DateTime.Parse() -- String was not recognized as a valid DateTime

I am trying to consume an object returned by a third party .dll
public class AuroraTransaction
{
....
public DateTime Date { get; }
....
}
I'm having trouble with that Date property:
// Gets a List from the third party .dll...
List<AuroraTransaction> transactions = report.RunReport();
Then:
foreach (AuroraTransaction trans in transactions)
{
....
// This next line throws an error...
DateTime dt = DateTime.Parse(trans.Date.ToString(), CultureInfo.InvariantCulture);
....
}
String was not recognized as a valid DateTime.
If I put trans.Date.ToString() in the watch....
I'm stumped as to why I'm getting the error

I'm pretty sure what you are trying to achieve here is not possible from what you are trying to do, like Mohammad Wasim said, it would be better to parse it then define the year, month, day, hour,minute,second.
DateTime dt = DateTime.Parse(trans.Date.ToString("yyyy/MM/dd HH:mm:ss"), CultureInfo.InvariantCulture);

try like this
DateTime dt = DateTime.Parse(trans.Date.ToString("yyyy/MM/dd HH:mm:ss"), CultureInfo.InvariantCulture);

How to convert informal string value to Date time in c#

All of my friend.
I want to convert informal string to dateTime in c#. Here my string value is "01042016".How can convert? can i need another step to change DateTime.
This is my code:
string FinancialYear = "01042016-31032017";
string[] splitDate = FinancialYear.Split('-');
DateTime startDate = Convert.ToDateTime(splitDate[0].ToString(),"dd/MM/yyyy"));

As we can see that the input date will be in the format ddMMyyyy so here the best option for converting the input to DateTime object is DateTime.TryParseExact the code for this will be :
string FinancialYear = "01042016-31032017";
string[] splitDate = FinancialYear.Split('-');
DateTime startDate ;
if(DateTime.TryParseExact(splitDate[0],"ddMMyyyy",CultureInfo.InvariantCulture,DateTimeStyles.None,out startDate))
{
// Proceed with the startDate it will have the required date
}
else
// Show failure message

This will create an Enumerable where index 0 is the first date and index 1 is the second date.
string FinancialYear = "01042016-31032017";
var dateRange = FinancialYear.Split('-')
.Select(d => DateTime.ParseExact(d, "ddMMyyyy", CultureInfo.InvariantCulture);

If you are not sure of the format your best bet is using DateTime.Parse() or DateTime.TryParse()
You are not 100% guaranteed that the date will be parsed correctly, especially in cases where the day and month numbers could be in the wrong order.
It is best to specify a required date format if you can so you can be sure the date was parsed correctly.

if you string is in static format, you can convert it by reconvert it to valid string format first such as
string validstring = splitDate[0].ToString().Substring(4,4)+"-"+splitDate[0].ToString().Substring(2,2) +"-"+ splitDate[0].ToString().Substring(0,2);
DateTime startDate = Convert.ToDateTime(validstring,"dd/MM/yyyy"));

Getting date in correct formatted for with proper timezone, among list of strings in an a array

I have a set of array.
//this is not hard corded, some times array will have multiple no.of strings in date format.
["vishnu","2016-08-31T18:30:00.000Z","1992","banglore"]
I have an array of strings, among these strings there is one string which is in date format.
I need to do a foreach and need to check which string is in the date format.
If we got the date string "2016-08-30T18:30:00.000Z" I need to convert it to basic date format but in correct timezone, here the date is 2016-08-31 but what I need as out put is
["vishnu","31/8/2016","1992","banglore"]
not
//check the difference in date!
["vishnu","30/8/2016","1992","banglore"]
the aim is from the array, if string is in date string format, convert it.
public static void Main(string[] args)
{
string inputString = "2016-08-31T18:30:00.000Z";
DateTime enteredDate = DateTime.Parse(inputString);
Console.WriteLine(enteredDate);
DateTime dDate;
if (DateTime.TryParse(inputString, out dDate))
{
DateTime dtx = enteredDate.ToLocalTime();
String.Format("{0:d/MM/yyyy}", dDate);
Console.WriteLine(dtx);
}
else
{
Console.WriteLine("Invalid"); // <-- Control flow goes here
}
// DateTime dt = convertedDate.ToLocalTime();
}

If you need to correct the DateTime for the time zone, you can use TimezoneInfo.ConvertTime():
string inputString = "2016-08-31T18:30:00.000Z";
DateTime dDate;
if (DateTime.TryParse(inputString, out dDate))
{
DateTime correctedDateTime = TimeZoneInfo.ConvertTime(dDate, TimeZoneInfo.Local);
// write this here back into the array using your format
Console.WriteLine(correctedDateTime.ToString("dd/MM/yyyy", CultureInfo.InvariantCulture));
}
else
{
Console.WriteLine("Invalid"); // <-- Control flow goes here
}
For further reference check out this post. This answer is inspired by it to use TimeZoneInfo.

DateTime dDate;
do this operation iside foreach
if (DateTime.TryParse(answerString, out dDate))
{
DateTime enteredDate = DateTime.Parse(answerString);
var Date = enteredDate.ToString("dd/MM/yyyy");
answerString = Date;
Console.WriteLine(answerString);
}
else{
//operation
}
thanks to mong zhu

Try using DateTimeOffset rather than DateTime as it is built to handle time zones.
Here's the code:
string inputString = "2016-08-31T18:30:00.000Z";
DateTimeOffset enteredDate = DateTimeOffset.Parse(inputString);
Console.WriteLine(enteredDate);
DateTimeOffset dtx = enteredDate.ToLocalTime();
Console.WriteLine(dtx);
This produces the following for me in GMT+09:30:
2016/08/31 18:30:00 +00:00
2016/09/01 04:00:00 +09:30
To get it in Indian time try this:
DateTimeOffset dtx = enteredDate.ToOffset(TimeSpan.FromHours(5.5));
Console.WriteLine(dtx);
I get 2016/09/01 00:00:00 +05:30 now.

Best way to bind DateTime to seperate date and time fields?

I use a model class with a DateTime value. I would like to display this property as two boxes, one for the date and the other one for the time.
What is the best way to do this? Any suggestions?
Thanks in advance!

Check this Splitting DateTime Blog post by Hanselman.

Format your datetime in 2 diffent properties.
first to retrieve datetime format as "yyyy/MM/dd"
second format as "HH:mm:ss"

All you need to do is use two format expressions, one to extract the time and the other to extract the date.
Bind this to the date box:
txtDateBox.Text = date.ToString("dd MMM yyyy");
Bind this to the time box:
txtTimeBox.Text = date..ToString("HH:mm:ss");
(Presumign your variable is called date).

You could do something like this (I didn't run the code, it's only an idea):
private DateTime MyModelDateTime;
public string date
{
get
{
return MyModelDateTime.ToString("MM/dd/yyyy");
}
set
{
string pattern = "MM/dd/yyyy HH:mm:ss";
string timeValue = MyModelDateTime.ToString("HH:mm:ss");
string dateTimeValue = value + " " +timeValue;
MyModelDateTime = DateTime.ParseExact(dateTimeValue, pattern, null, DateTimeStyles.None)
}
}
public string time
{
get
{
return MyModelDateTime.ToString("HH:mm:ss");
}
set
{
string pattern = "MM/dd/yyyy HH:mm:ss";
string dateValue = MyModelDateTime.ToString("MM/dd/yyyy");
string dataTimeValue = dateValue + " " + value;
MyModelDateTime = DateTime.ParseExact(dateTimeValue, pattern, null, DateTimeStyles.None)
}
}

String date time format

I am using the Vimeo API and I want to convert the string <upload_date> to a short date format, {0:d} or {0:dd/mm/yyyy}.
This is my code but it doesn't seem to be working for me.
select new VimeoVideo
{
Date = String.Format("{0:d}",(item.Element("upload_date").Value)),
};
return Vids.ToList();
}
public class VimeoVideo
{
public string Date { get; set; }
}

As Oleg suggested you can try to parse your value to DateTime and then format it (use try catch if needed). That should work (not 100% sure since I don't know what item's type is).
var myDate = DateTime.Parse(item.Element("upload_date").Value);
Date = String.Format("{0:d}", myDate);
http://msdn.microsoft.com/it-it/library/1k1skd40(v=VS.80).aspx

Just verify the type of the Value property.. The above string formatter works for System.DateTime structure.. I assume in your case its string type object. According to the given sample date time string i have written this code.. Try out this.
CultureInfo provider = CultureInfo.InvariantCulture;
var format = "yyyy-MM-dd HH:mm:ss";
var dt = DateTime.ParseExact(item.Element("upload_date").Value, format, provider);
Date = string.Format("{0:d}", dt);
Hope it works..