Format 2 strings to RSS PubDate

Question

ive got 2 strings, date:"27.03.11 " and time:"15:04", which id like to format as a PubDate elemnt for a rss file like Fri, 18 Nov 2005 19:12:30 GMT. How can i do this in c sharp?

First, parse both into the same DateTime and use that DateTime to generate your result string — Polity, May 12 '11 at 14:52

score 2 · Accepted Answer · edited May 23 '17 at 12:12

2

Use the following steps:

Parse the date and time strings into one DateTime variable. Use the DateTime.ParseExact static method for this.
Convert the datetime to GMT using the methods of the TimeZone class (if desired---I don't think this is mandatory according to the RSS specification).
Format this variable into a string using the DateTime.ToString method. The following MSDN pages will help you choose the correct format string based on your needs:
- Standard Date and Time Format Strings
- Custom Date and Time Format Strings

Since RSS requires dates to be in the RFC 822 format, the following related SO question might help you with the last step:

How do I parse and convert DateTime’s to the RFC 822 date-time format?

EDIT: For the first step, have a look at this example:

var s = "27.03.11 15:04"; 
var dtm = DateTime.ParseExact(s, @"dd.MM.yy HH\:mm", null);

(The \: ensures that : is seen as a literal : rather than a culture-specific time separator.)

edited May 23 '17 at 12:12

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answered May 12 '11 at 14:51

Heinzi

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Can u help me withe the first part? Itried the following example from a tutorial but always get the error "String was not recognized as a valid DateTime." String MyString; MyString = "1999-09-01 21:34 PM"; //MyString = "1999-09-01 21:34 p.m."; //Depends on your regional settings DateTime MyDateTime; MyDateTime = new DateTime(); MyDateTime = DateTime.ParseExact(MyString, "yyyy-MM-dd HH:mm tt", null); – kojoma May 12 '11 at 16:22
That date doesn't make sense: If it's 24hour time, you don't need am or pm. I've added an example for the first part to my answer. – Heinzi May 13 '11 at 10:02
@kojoma: PS: Don't trust that tutorial, it's bad code (for example, there's no need to set MyDateTime to "new DateTime()" before filling it with ParseExact). – Heinzi May 13 '11 at 10:05

Format 2 strings to RSS PubDate

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