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PORobust DateTime parser library for .NET
 

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    <p>I am writing an RSS and Mail reader app in C# (technically MonoTouch).</p> <p>I have run into the issue of parsing <code>DateTime</code>s. I see a lot of variance in how dates are presented in the wild and have begun writing a function like this:</p> <pre><code>static string[] DateTimeFormats = new string[] { "ddd, d MMM yyyy H:mm:ss \"GMT+00:00\"", "d MMM yyyy H:mm:ss \"EST\"", "yyyy-MM-dd\"T\"HH:mm:ss\"Z\"", "ddd MMM d HH:mm:ss \"+0000\" yyyy", }; public static DateTime ParseTime(string timeStr) { var r = DateTime.MinValue; var styles = DateTimeStyles.AdjustToUniversal | DateTimeStyles.AllowWhiteSpaces; if (DateTime.TryParse(timeStr, CultureInfo.InvariantCulture, styles, out r)) { return r; } else { if (DateTime.TryParseExact(timeStr, DateTimeFormats, CultureInfo.InvariantCulture, styles, out r)) { return r; // BUGGY! Ignores time zone!! } } Console.WriteLine ("BAAAAAAAAAAAAD"); return DateTime.MinValue; } </code></pre> <p>This, well, makes me sick. Two points. (1) It's silly of me to think that I can actually collect a format list that will cover everything out there. (2) It's wrong! Notice that I'm treating an EST date time as UTC (since .NET seems oblivious to time zones).</p> <p>I am looking for an existing library (source only please) that is known to handle a bunch of these formats.</p> <p>Also, I would like to keep using UTC DateTimes throughout my code so whatever library is suggested should be able to produce DateTimes.</p> <p>Is there anything out there like this?</p> <p><strong>Update</strong> It would seem I was unclear in my request. I am looking for a library that knows a lot of these <strong>wild</strong> format strings. DateTime.Parse/DateTime.TryParse only know a couple formats, and they certainly don't understand timezones (you can see I am already using it). I need something more powerful than DateTime.Parse/DateTime.TryParse.</p> <p><strong>Update 2</strong> Everyone was dwelling on the fact that I was using Parse instead of TryParse. I have switched the code. <strong>But it's still wrong and incomplete.</strong></p>
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    1. COEventually noda-time may provide some of this functionality: http://code.google.com/p/noda-time/
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