Get full day Name from DateTime in C# - c#

I have js calender when I select date from calender it calls C# service which takes string as parameter . It is getting date in format Mon Apr 18 2016 00:00:00 GMT 0500 . I want Monday intead of Mon.
My java Script code is
$scope.deliveryDateTime = { Day: new Date(2015, 11, 28, 14, 57) };
var DeliveryDay = $scope.deliveryDateTimeData.Day;
$http.get(meta.service.GetTimeAvlb+'?day='+ DeliveryDay).
success(function (data) {
debugger;
console.log("Data" + data);
$scope.AvailiableTimeData = data.data;
}
}).
error(function (data) {
});
Here is my C# Service code
public ApiResult GetTimeAvlb( string day )
{
var splitDay = day.Split(' ');
string dayName1 = splitDay[0].ToString();
apiresilt.data = db.TimeAvaliblities.Where(ss => ss.DayName == dayName1).ToList();
return apiresilt;
}
here dayName1 returning Mon while my db has value Monday .

If you really wanna parse this string to DateTime, you have to use your GMT 0500 (Pakistan Standard Time) part as a string literal. DateTime parsing methods does not support timezone names and UTC Offset part without TimeSeparator.
Then you can use DateTime.ToString method with dddd specifier and english-based culture like InvariantCulture.
var s = "Mon Apr 18 2016 00:00:00 GMT 0500 (Pakistan Standard Time)";
var dt = DateTime.ParseExact(s, "ddd MMM dd yyyy HH:mm:ss 'GMT 0500 (Pakistan Standard Time)'",
CultureInfo.InvariantCulture);
Console.WriteLine(dt.ToString("dddd", CultureInfo.InvariantCulture));
By the way, there is no such a thing as date time string. Your data either can be DateTime or string.

.ToString("Format-String") can be used for display date in required format;
DateTime dt = DateTime.Now; will be the current date APR/01/2016
string str = dt.ToString("dddd"); // this will be Friday for 04/01/2016

Related

Convert string to string(datetime) in EST

I have string in "Mon, 20 Mar 2021 14:04:48 +0000"
and I want to convert it as "20 Mar 2021 | 14:04 PM"
I want to convert the string as it is but it was appearing differently in my local and server.
First of all 20 Mar 2021 is Saturday, not Monday, let's correct it. Then you can ParseExact to get DateTime and finally represent it in the required format with a help of ToString():
string source = "Sat, 20 Mar 2021 14:04:48 +0000";
string result = DateTime
.ParseExact(source, "ddd, dd MMM yyyy HH:mm:ss zzz", CultureInfo.InvariantCulture)
.ToUniversalTime()
.ToString("dd MMM yyyy' | 'HH:mm tt", CultureInfo.InvariantCulture);
Notes:
It seems that you want to obtain Universal (not Local) time, that's why I've added ToUniversalTime()
14:04 PM looks strange for me (14:04 and 02:04 PM are much more frequent formats); put hh instead of HH to have 02:04 PM
If you actually want to be manipulating the timezone information, then use Noda Time.
If that's your exact text format, and the dates and times are what you want, you can convert it manually:
var input = "Mon, 20 Mar 2021 14:04:48 +0000";
var dateParts = input.Split(' ');
var timeParts = dateParts[4].Split(':');
var amPm = int.Parse(timeParts[0]) < 12 ? "AM" : "PM";
var output = $"{dateParts[1]} {dateParts[2]} {dateParts[3]} | {timeParts[0]}:{timeParts[1]} {amPm}";
System.Console.WriteLine(output); // "20 Mar 2021 | 14:04 PM"
Or, if you are feel adventurous, use a regular expression.

How to Convert long string to DateTime?

I have a date string in the following format:
var dateString = Fri Jun 26 2020 00:00:00 GMT+0100 (British Summer Time)
How can I convert this to a DateTime in C# such as 26/06/2020 00:00:00
I have tried:
DateTime.Parse(dateString);
And:
DateTime.ParseExact(dateString);
And I get:
System.FormatException: 'String was not recognized as a valid DateTime.'
You can accomplish this by using DateTime.ParseExact and providing a custom date time format. However, this will only work if you first modify the input string to be able to fit the custom date and time format strings that are included in .net.
CultureInfo provider = CultureInfo.InvariantCulture;
var input = "Fri Jun 26 2020 00:00:00 GMT+0100 (British Summer Time)";
// set up a regex that will match the text starting with GMT, and extract just the timezone offset
// (the description of the timezone is irrelevant here)
var r = new Regex(#"GMT([+-]\d\d\d\d) \([\w\s]*\)");
// this will remove the extra text: "Fri Jun 26 2020 00:00:00 +0100"
// now we can match it in our format string
var s = r.Replace(input, "$1");
var f = "ddd MMM dd yyyy hh:mm:ss zzz"; // matches the s variable
var d = DateTime.ParseExact(s, f, provider); // you now have parsed your date
This will include the timezone offset in the DateTime object. If you just want it to be set to "26/06/2020 00:00:00" and to ignore the datetime offset, then just change the regex replace above to replace with String.Empty instead of $1.
This will solve your problem.
var dateString = "Fri Jun 26 2020 00:00:00 GMT + 0100(British Summer Time)"; Console.WriteLine(DateTime.Parse(dateString.Substring(4, 11)));
Hello so what you can do is you can take advantage of "datetime" class and just write this:
DateTime.Now.ToString("MM/dd/yyyy HH:mm");
edit: sorry i forgot to supply the link haha
https://www.c-sharpcorner.com/blogs/date-and-time-format-in-c-sharp-programming1

How to Parse a Date Time with TimeZone Info

I have following string ,
Thu Sep 24 2015 00:00:00 GMT+0530 (IST)
I tried with following but it's faling.
var twDate = DateTime.Parse("Thu Sep 24 2015 00:00:00 GMT+0530 (IST) ");
Can not use replace , as IST wont be fixed. Any Ideas?
You need to trim the time zone abbreviation off using normal string operations, then specify a custom date and time format string. For example:
// After trimming
string text = "Thu Sep 24 2015 00:00:00 GMT+0530";
var dto = DateTimeOffset.ParseExact(
text,
"ddd MMM d yyyy HH:mm:ss 'GMT'zzz",
CultureInfo.InvariantCulture);
Console.WriteLine(dto);
Note the use of CultureInfo.InvariantCulture here - you almost certainly don't want to parse using the current thread's current culture.
If your string always has the same format and length, you could use this to get UTC:
String dtstr = "Thu Sep 24 2015 00:00:00 GMT+0530 (IST)";
int zoneMin = int.Parse(dtstr.Substring(29, 2)) * 60 + int.Parse(dtstr.Substring(31, 2));
if (dtstr.Substring(28, 1) == "+") zoneMin = -zoneMin;
DateTime dt = DateTime.Parse(dtstr.Substring(0, 24)).AddMinutes(zoneMin);

c# convert string to date type

I've got this string:
string date = "Sun, 17 Mar 2013 12:40:23 +0000";
And trying to convert to a date type but I keep getting a not in correct format error when I try the convert.
DateTime dt = Convert.ToDateTime(date);
And then trying to get it into these formats:
dt.ToString("dd")
dt.ToString("MMMM")
dt.ToString("yyyy")
You can use DateTime.ParseExact for the conversion.
Try the following code:
var date = "Sun, 17 Mar 2013 12:40:23 +0000";
var dt = DateTime.ParseExact(date, "ddd, dd MMM yyyy hh:mm:ss zzz", CultureInfo.InvariantCulture);
Console.WriteLine(dt.ToString("dd"));
Console.WriteLine(dt.ToString("MMMM"));
Console.WriteLine(dt.ToString("yyyy"));
Output:
17
March
2013
Try DateTime.TryParse() or DateTime.Parse()
Try using DateTime.Parse instead.
var dt = DateTime.Parse(date);
I would also recommend that you Parse the date using DateTime.TryParse to make sure that the date is always in a valid format.
DateTime result;
if (DateTime.TryParse(date, out result))
{
Console.WriteLine(result.ToString("dd"));
Console.WriteLine(result.ToString("MMMM"));
Console.WriteLine(result.ToString("yyyy"));
}
else
{
Console.WriteLine("Error parsing date.");
}
If you are still experiencing issues you may need to provide DateTime with a CultureInfo. This allows you to specify the exact Culture used by the parser, to ensure that the computer region settings doesn't cause any issues.
DateTime.Parse(date, new CultureInfo("en-US")); // Specific culture
DateTime.Parse(date, CultureInfo.InvariantCulture); // Culture-insensitive
// Culture-insensitive TryParse
if (DateTime.TryParse(date, out result, CultureInfo.InvariantCulture))
{...}
The normal DateTime uses the culture set by your Operating System.
You can use DateTime.Parse with CultureInfo.InvariantCulture which ignores your current culture, hence avoids possible localization issues.
DateTime dt = DateTime.Parse(date, CultureInfo.InvariantCulture);
CultureInfo.InvariantCulture is similar to the english culture and works with your string.
Demo
Have you checked DateTime.TryParse method? If you scroll down, you will notice that the last sample actually is "Fri, 15 May 2009 20:10:57 GMT", similar to your request.
You can use DateTime.Parse() method like;
string date = "Sun, 17 Mar 2013 12:40:23 +0000";
DateTime dt = DateTime.Parse(date, CultureInfo.InvariantCulture);
Console.WriteLine(dt.ToString("dd"));
Console.WriteLine(dt.ToString("MMMM"));
Console.WriteLine(dt.ToString("yyyy"));
Output will be;
17
March
2013
Here is a DEMO.
Well..If you need the result in numeric format,try as shown below
string date = "Sun, 17 Mar 2013 12:40:23 +0000";
DateTime dt = Convert.ToDateTime(date);
var day = dt.Day;
var month = dt.Month;
var year = dt.Year;
var time = dt.ToShortTimeString();
var hour = dt.Hour;
var minute = dt.Minute;
var second = dt.Second;
The Variables will return the exact numerical form.
NB: Hour will be depicted as 24 hour format
public string dateConvertion(string da)
{
string sDate = da;
sDate = sDate.Replace("-", "/");
sDate = sDate.Replace(".", "/");
string format = "dd/MM/yyyy";
DateTime dDate;
if (DateTime.TryParse(sDate, out dDate))
{
//if (DateTime.TryParseExact(sDate, format, CultureInfo.InvariantCulture, DateTimeStyles.None, out dDate))
//{
sDate = dDate.ToString("MM/dd/yyyy");
sDate = sDate.Replace("-", "/");
sDate = sDate.Replace(".", "/");
}
return sDate;
}

Casting String to DateTime

I have a string in format
Jul 13 2011 1:07PM
I want to cast it as
dd/MM/yyyy HH:mm tt
e.g: 13/7/2011 11:49:00 AM //string=Jul 13 2011 1:07PM
I am using following code to cast it to date.
DateTime date = Convert.ToDateTime(Convert.ToDateTime(myDateString).ToString("dd/MM/yyyy HH:mm:ss"));
This works fine if my day in my string is less than 13
Jul 12 2011 1:07PM //this will cast to desire format fine!
Jul 13 2011 1:07PM //gives error String was not recognized as a valid DateTime.
I understand that it is taking day as month but I can not found a way to cast it to desire format.
See DateTime.ParseExact :
DateTime date = DateTime.ParseExact(myDateString, "MMM dd YYYY H:mmtt", CultureInfo.InvariantCulture);
See also Time Format Strings
You should use DateTime.TryParse
DateTime dt ;
if (DateTime.TryParse("Jul 13 2011 1:07PM",out dt))
MessageBox.Show("Converted to Date object");
Post that you use the ToString() method to get the desired output
dt.ToString("dd/MM/yyyy HH:mm")
First, convert the string Jul 13 2011 1:07PM to a date:
var date = Convert.ToDateTime("Jul 13 2011 1:07PM");
Then, convert it to a string in the format you like:
var dateText = date.ToString("dd/MM/yyyy HH:mm:ss");
I believe you're searching for this:
Date.ParseExact("Jul 13 2011 1:07PM", "MMM d yyyy h:mmtt", Globalization.CultureInfo.InvariantCulture)

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