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PORegEx String Validator
 

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    <p>In my MVC3 application, on one of the entities I am saving the <em>Date of Birth as a string</em>. Why ? because my application allows the storage of the date of birth of people long dead, eg. Socrates, Plato, Epicurus ... etc and as far as I know the DateTime class doesn't allow that.</p> <p>Now obviously we don't know the exact date of birth of Epicurus for example, we just know the year of birth [ 341 BCE ], so what I am thinking of doing is building a custom validator, that will validate the input string for the Date of Birth and make sure that they all match the following format:</p> <pre><code>12 Feb 1809 Feb 1809 341 341 BCE Oct 341 BCE 11 Mar 5 BCE </code></pre> <p>I would greatly appreciate it if someone can help me with a regular expression that will match any of the above, and of course not match anything else.</p> <p>I've been trying for hours, and not getting anywhere :s</p> <p><strong>UPDATE IN RESPONSE TO PROVIDED ANSWERS:</strong></p> <p>Thank You very much guys, I wish I was as good as you lot in building RegExes ! Since my application is with ASP.net MVC3, I would like to stick with the .NET RegEx class (for convenience's sake).</p> <p>luastoned answer seems to work !! I can't seem to break its logic with all the test data I've thrown at it.</p> <p>One thing though, can I also allow BC ? cause some people use BC and others use BCE &lt; would that be possible ? And .. am I right that the regular expression can not replace BC with BCE ? I have to do that manually through my C# code correct ? the RegEx would just either Match or Not .. correct ?</p> <p><strong>UPDATE TWO:</strong></p> <p>M42's Regular Expression seems to be working better. I've just copied it and used it in my Custom Validator (code in PasteBin link below).</p> <p>Thank You.</p>
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