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Convert string to date with format 'dd.MM.yyyy HH:mm:ss.fff z'

My string of date is '2018-12-30T18:30:00.000Z' and i am unable to convert it to datetime.
I have tried
DateTimeOffset.ParseExact(DOCDate, "dd.MM.yyyy HH:mm:ss.fff z", CultureInfo.InvariantCulture);

The reason your code does now work, is that the date in your string is in yyyy-MM-ddTHH:mm:ss.fffZ format, and the format you specify to ParseExact is dd.MM.yyyy HH:mm:ss.fff z. That way the date could not be parsed.

DateTimeOffset.Parse("2018-12-30T18:30:00.000Z"); seems to work OK.

string s="2018-12-30T18:30:00.000Z";
DateTime da= DateTime.ParseExact(s, "yyyy-MM-ddTHH:mm:ss.fffZ", CultureInfo.InvariantCulture);
Response.Write(da.ToString());
Try this

You can use DateTime.TryParse with DateTimeStyles.AdjustToUniversal to have the exact same time, or DateTimeStyles.AssumeUniversal to adjust to the Local Time:
bool result = DateTime.TryParse("2018-12-30T18:30:00.000Z", CultureInfo.CurrentCulture,
DateTimeStyles.AdjustToUniversal, out DateTime dt);
=> 12/30/2018 18:30:00 or 30/12/2018 18:30:00 (...)
bool result = DateTime.TryParse("2018-12-30T18:30:00.000Z", CultureInfo.CurrentCulture,
DateTimeStyles.AssumeUniversal, out DateTime dt);
=> 30/12/2018 [Adjusted to your Local time] (...)

This would give you a string in desired format
(DateTime.Parse("2018-12-30T18:30:00.000Z" )).ToString("dd.MM.yyyy HH:mm:ss.fff z");

string dateString="2018-12-30T18:30:00.000z";
Console.WriteLine(DateTimeOffset.Parse(dateString));
See the Output of in the image below it's working

Convert a string has datetime to DateTime

I want to convert a string of date and time to DateTime structure, but it is giving this error :
String was not recognized as a valid DateTime
DateTime dt = Convert.ToDateTime("5/15/2018 11:54:18 AM");
string date= dt.ToString("HH:mm");
I'm reading this question but I can't solve this code. What is my mistake?
What is the difference between Convert.ToDateTimeand DateTime.ParseExact() in C#?

Based on all the comments, here's how your code should look like
DateTime dt = DateTime.ParseExact("05/15/2018 11:54:18 AM", "MM/dd/yyyy HH:mm:ss tt", CultureInfo.InvariantCulture);
string date = dt.ToString("HH:mm");

What is my mistake?
You Mistake is You are Providing argument Convert.ToDateTime() in a wrong Format.
try Providing "DD/MM/YYYY HH:MM:SS" according to Your system date Time Format .Else you need to use TryParseExatct with Specifying Format

Convert custom date to mysql datetime

I have a custom date format that I want to convert to Datetime so I can then insert into my database, I tried using Datetime.ParseExact() But I think I'm misunderstanding something as the code throws a System.FormatException.
I have the following date format from a csv
> 6/11/2014 9:00
and I wish to convert it to the mysql datetime format
> 0000-00-00 00:00:00 OR yyyy-MM-dd HH:mm:ss
Notice they haven't included the seconds in the original date so I am unsure (without appending them to the end) how to set all records to just have "00" for seconds as it is not available.
I tried the following which throws an exception
DateTime myDate = DateTime.ParseExact("6/11/2014 9:00", "yyyy-MM-dd HH:mm",
System.Globalization.CultureInfo.InvariantCulture);

first thing you need to convert string to date time and than convert datetime tos tring
string strd = "6/11/2014 9:00";
DateTime dt ;
//convert datetime string to datetime
if(DateTime.TryParse(strd, out dt))
{
//convert datetime to custom datetime format
Console.WriteLine("The current date and time: {0: yyyy-MM-dd HH:mm:ss}",
dt); ;
}
output

I know this is late to answer that but I'm really surprised none of answer consider to use IFormatProvider to prevent a possible parsing error because of / format specifier or considering your string is a standard date and time format for your CurrentCulture or not so you can or can't use DateTime.TryParse(string, out DateTime) overload directly.
First of all, let's look at what DateTime.ParseExact documentation says:
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 or an exception is thrown.
In your case, they don't match. You should use d/MM/yyyy H:mm format to parse your example string with a culture that have / as a DateSeparator. I almost always suggest to use DateTime.TryParseExact method in this kind of situations;
string s = "6/11/2014 9:00";
DateTime dt;
if(DateTime.TryParseExact(s, "d/MM/yyyy H:mm", CultureInfo.InvariantCulture,
DateTimeStyles.None, out dt))
{
Console.WriteLine(dt.ToString("yyyy-MM-dd HH:mm:ss"));
// result will be 2014-11-06 09:00:00
}

If you know formats of your dates, then you can do this:
string stringDate = "6/11/2014 9:00";
//Your date formats of input
string[] dateFormats = new string[]
{
"d/MM/yyyy H:mm",
"dd/MM/yyyy H:mm",
"dd/MM/yyyy HH:mm",
"dd/MM/yyyy H:mm:ss",
"dd/MM/yyyy HH:mm:ss"
/* And other formats */
};
DateTime convertedDate;
bool isSuccessful = DateTime.TryParseExact(stringDate, dateFormats,
System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.None, out convertedDate);
if (isSuccessful)
{
//If conversion was successful then you can print your date at any format you like
//because you have your date as DateTime object
Console.WriteLine(convertedDate.ToString("dd-MM-yyyy HH:mm:ss")); /* Or other format you want to print */
}
I hope it will be helpful to you.

Convert a string to datetime format in asp .net

I have a date time string "12-24-2013 15:19:29" which is in "MM-dd-yyyy HH:mm:ss". I want to convert this string to datetime. But the format should not change.ie, it should be the same "MM-dd-yyyy HH:mm:ss" format.
When I used following method,
DateTime dt2 = DateTime.ParseExact(date31strin, "MM-dd-yyyy HH:mm:ss", CultureInfo.InvariantCulture);
the format is changed to "dd-MM-yyyy HH:mm:ss". I have tried some other method also, but still getting this same format.

First, you should be parsing the string to a DateTime and then format it to the second format using ToString() method.
//Convert your string to a DateTime
DateTime dt2 = DateTime.ParseExact(date31strin,
"MM-dd-yyyy HH:mm:ss", CultureInfo.InvariantCulture);
//If you want to change the format
string secondFormat = dt2.ToString("Second format string");
Note: Date is a Date and it does not have a format. If you need to convert the string to a DateTime, first line of code is enough

You are not changing the format.
You are parsing a string into a DateTime object which does not have a format.
When you decide to present the DateTime, you can format it any way you wish.

to parse String to DateTime use method DateTime.TryParse (http://msdn.microsoft.com/cs-cz/library/ch92fbc1%28v=vs.110%29.aspx) and then use DateTime formating (http://msdn.microsoft.com/en-us/library/az4se3k1%28v=vs.110%29.aspx) to output to aspx page

//frndzz if you are using j query and you don't convert date in(MM/dd/yyyy) to //(dd/MM/yyyy) then this code will help you
// i try it and i get the answer
string sd=txtmydate.Text //sd=04/27/2015 (MM-dd-yyyy) format
string [] sdate = sd.Split('-');
string fd = sdate[1];
fd=string.Concat(sdate[1],"-",sdate[0],"-",sdate[2]);
DateTime dt = Convert.ToDateTime(fd);
txtshow.Text = dt.ToString("dd/MM/yyyy");
//txtshow will show you date as 27-04-2015 (dd/MM/yyyy) format
thanks

How to convert string to DateTime:
string iDate = "Absent";
aEmployeeAttendence.Intime = DateTime.Parse(iDate);
//aEmployeeAttendence (object)
//Intime (field)

Date and time format conversion in C#

I have date/time format, for example:
"2012-06-28T08:26:57Z"
What kind of date/time format is that and how can it be converted into the following format, using DateTime format in C#.:
"8/24/2012 4:09:17 AM"

You can do this:
string input = "2012-06-28T08:26:57Z";
var dt = DateTime.Parse(input);
string output = dt.ToString(#"MM/dd/yyyy h:mm:ss tt", CultureInfo.InvariantCulture);
For the meaning of each part of your input string, take a look at this link: http://www.w3.org/TR/NOTE-datetime

This is an ISO8601 date/time string. The numbers are the year, month, day, hour, minute, and second (in that order).
The "T" is a placeholder. It means nothing.
The "Z" is an indicator that the time is relative to GMT, rather than in a local time zone.

Try converting the date into string like this
date.ToString("yyyy-MM-dd HH':'mm':'ss")
Here date is a variable in which a date is present
or try this
string timeString = "11/12/2009 13:30:00.000";
IFormatProvider culture = new CultureInfo("en-US", true);
DateTime dateVal = DateTime.ParseExact(timeString, "dd/MM/yyyy HH:mm:ss.fff", culture);
These links might also be helpful to you.
DateTime.ToString() Patterns
String Format for DateTime [C#]

Try this to convert Universal datetime to local time
var date = DateTime.ParseExact("2012-08-25T06:57:57Z","yyyy-MM-ddTHH:mm:ssZ",System.Globalization.CultureInfo.CurrentCulture);
var newformat = date.ToString("MM/dd/yyyy HH:mm:ss tt");

try to use something liKe this.
var d = DateTime.Parse("2012-08-24T04:09:17Z");
Console.WriteLine (d.ToString("G"), CultureInfo.InvariantCulture);
Note that 'General date/time pattern (long time).' in .net is culture specific. From msdn:
6/15/2009 1:45:30 PM -> 6/15/2009 1:45 PM (en-US)
6/15/2009 1:45:30 PM -> 15/06/2009 13:45 (es-ES)
6/15/2009 1:45:30 PM -> 2009/6/15 13:45 (zh-CN)

That is Universal Sortable date format
You can use following code to convert it
var dt = DateTime.Parse("2012-06-28T08:26:57Z");
var newdt = String.Format("{0:G}", dt); // "6/28/2012 1:56:57 PM"
Update
You can try this also
var dt = DateTime.Parse("2012-06-28T08:26:57Z", System.Globalization.CultureInfo.InvariantCulture);
var newdt = String.Format("{0:G}", dt);

http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx this is answer to your question. Here you can see how to create different date formats. According to this resource, you may use something like this:
String olddate="2012-06-28T08:26:57Z";
DateTime date=Convert.ToDateTime(olddate);
String date1=date.ToString("M/d/yyyy h:m:s tt");

you can simply use :)
DateTime dt = Convert.ToDateTime("2012-06-28T08:26:57Z");