using System;
using System.Globalization;
using System.Linq;
using System.Collections.Generic;
 
public class Test
{
    	public static void Main()
	{
         var strings = new[] { "07 December, 2012", "7 December, 2012", "December 07, 2012", "December 07, 2012", "12/07/2012", "12/7/2012" };
        var formats = new[]{"dd MMMM, yyyy", "d MMMM, yyyy", "MMMM dd, yyyy", "dd/MM/yyyy", "dd/M/yyyy"};
        var dates = strings
            .Select(s => DateTime.ParseExact(s, formats, CultureInfo.InvariantCulture, DateTimeStyles.None));
        foreach(DateTime d in dates)
            Console.WriteLine("Year:{0} Month:{1} Day:{2}", 
                d.Year
                , d.Month
                , d.Day);
	}
}

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