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How to convert date format with T format in c# [closed]

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I have a date format as shown below 2021-02-11T13:00:00+04:00 which i need to get in following format 11-FEB-20 01.00.00.000000000 PM.How can i achieve it ?

Parse and then format according to Custom date and time format strings
DateTime dt = DateTime.Parse("2021-02-11T13:00:00+04:00");
Console.WriteLine(dt.ToString("dd-MMM-yy"));

You can Parse form existing format into DateTime and then format it into String with the desired format string:
string source = "2021-02-11T13:00:00+04:00";
string result = DateTime
.Parse(source)
.ToString("dd-MMM-yy hh.mm.ss.fffffff'00' tt", CultureInfo.InvariantCulture)
.ToUpper();
Please, note
ToUpper() since we want FEB, not Feb.
fffffff'00' - we can't provide 9, but 7 digits after the decimal point, so we have to append two zeros.

How to get the date from the given string in c# [closed]

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I only need date from this string Wed, 02/05/2020 - 12:31 what format should I use whenever I am using
{MM/dd/yyyy} I am getting the same value if there is any other way please let me know
item.changed=Wed, 02/05/2020 - 12:31
`if (ListRecord.checkresponse == "Response Letters")
{
string checkresponse = item.changed;
string issueDate = string.Format("{0:MM/dd/yyyy}", checkresponse);
}`

To use date formatting, you need to start with a DateTime object, not a string.
So in your scenario you'll have to parse your string as a DateTime, then format it out again to a different string format. There's no way to directly format string -> string, all the logic about formatting is in the DateTime class.
Here's an example:
string changed = "Wed, 02/05/2020 - 12:31";
var checkresponse = DateTime.ParseExact(changed, "ddd, MM/dd/yyyy - HH:mm", CultureInfo.InvariantCulture);
string issueDate = string.Format("{0:MM/dd/yyyy}", checkresponse);
Console.WriteLine(issueDate);
Demo: https://dotnetfiddle.net/bhNImo
(Alternatively, since what you mainly want to do here is strip the first and last parts of the string and keep the date part, you could use a regular expression do to this from the string, but overall it's probably more reliably to use date parsing and formatting.)

Why does DateTime.Parse() get wrong year when parsing dd-MMM date? [closed]

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I created an application in which the user enter a month-year dd-MMM date as input, and this date is parsed using the DateTime.Parse() method. It is working fine on my PC.
Dim txtDate as String = combobox1.Text
Dim dtDate as DateTime = DateTime.Parse(txtDate)
Example:
DateTime.Parse("01-Dec")
Result:
2017-12-01 00:00:00
But when running this application on other machines, it returns 1899 year.
1899-12-01 00:00:00
After searching I found a similar question here: Time parsing Issue using DateTime.ParseExact() and it is marked as answered, but there is no solution for this situation
Does anyone knows what causes this problem?
Note: it is an old application I am working on. I know that it is recommended to replace it with a DateTime picker, but the issue is very confusing

Date.Parse without specifying an IFormatProvider will use the current user's Culture settings to determine what formats to parse, so 01/04/2017 will be 2017-April-01 on most computers (dd/MM/yyyy) but 2017-Jan-04 on computers in the US (MM/dd/yyyy).
If you're using the same format everywhere, you should use DateTime.ParseExact and provide an explicit format.
As for your specific problem, the string 01-Dec does not specify a year component, the computer must therefore infer the date, and how that date is inferred is often down to the Culture setting too.

Datetime Format to Date [closed]

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How to convert this?
public DateTime Date { get; set; }
I need to display only date.
Please could any one help to convert this to Date only

By 'display' I assume you mean to the console. Based on this assumption:
Console.WriteLine(Date.Date);
or
Console.WriteLine(Date.ToString("MM/dd/yyyy")); (as an example; there are many other strings you can pass into this overload).
More on the available strings here:
http://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx

I need to display only date.
The DateTime structure has numerous ways to accomplish this, most commonly .ToShortDateString() and .ToLongDateString():
var displayDate = Date.ToShortDateString();
For further customizations, you can supply a formatting string to the .ToString() method.

You can use the DateTime format string
eg,
Console.WriteLine(Date.ToShortDateString());
Console.WriteLine(Date.ToString("d"));
Console.WriteLine(Date.ToString("yyyy/MM/dd"));
See,
DateTime Format Methods - http://msdn.microsoft.com/enus/library/system.datetime_methods(v=vs.110).aspx
Standard DateTime Format Strings -
http://msdn.microsoft.com/en-us/library/az4se3k1(v=vs.110).aspx
Custom DateTime Format Strings -
http://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx

A DateTime always contains the Date and the Time - but you can just output the Datepart of it by using .ToString("d") as mentioned here: Extract the date part from datetime

This will get the date with the time being 00:00:00
public DateTime date { get { return this.date; } set; }
but as stated in a previous answer to display a datetime with only the date you should check out datetime.tostring formats.
http://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx

override default DateTime format in C# [closed]

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I am working in an application built in .NET framework 2.0 but I am running it in .NET framework 4.0, with SQL server as a database.
when I try to take date as a input from Calendar controller (Webforms) its in the format dd/MM/yyyy and this application using Convert.ToDateTime() to parse this date and it throws exception.
so how can I resolve this problem and is there any way that DateTime class object store the date in specific format means I want to store date in dd/MM/yyyy format even when I copy this date object to another, then both object should have same format.
and sorry for My English :p

Assuming you mean this Calendar control, you should just use the SelectedDate or SelectedDates property - let the control handle the conversions.
In general, you should avoid performing textual conversions unless you really need to. (This includes when you interact with the database - use parameterized SQL, and simply pass the DateTime values in the parameters.)

var result = DateTime.ParseExact("29/01/2014", "dd/MM/yyyy", CultureInfo.InvariantCulture);
You should avoid converting DateTime to string and back if you can help it.