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C# - Date Validation
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//Title of this code //Rextester.Program.Main is the entry point for your code. Don't change it. //Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5 using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; using System.Globalization; namespace Rextester { public class Program { public static void Main(string[] args) { Console.WriteLine("START"); CultureInfo enUS = new CultureInfo("en-US"); string dateString; DateTime dateValue; // Parse date with no style flags. dateString = " 2/ 29 /2008"; DateTime dateTest = new DateTime(2009,5,31); if (DateTime.TryParseExact(dateString, "M/d/yyyy", enUS, //CultureInfo.InvariantCulture, DateTimeStyles.AllowWhiteSpaces,// & DateTimeStyles.AssumeLocal, out dateValue)) Console.WriteLine("Converted '{0}' to {1} ({2}).", dateString, dateValue, dateValue.Kind); else Console.WriteLine("'{0}' is not in an acceptable format.", dateString); //if (dateString == dateValue.ToString("M/d/yyyy")) //if (dateString == dateValue.ToShortDateString()) if (dateTest == dateValue) Console.WriteLine("true"); else Console.WriteLine("false"); Console.WriteLine("END"); } } }
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Compilation time: 0.06 sec, absolute running time: 0.08 sec, cpu time: 0.06 sec, average memory usage: 16 Mb, average nr of threads: 4
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START Converted ' 2/ 29 /2008' to 2/29/2008 12:00:00 AM (Unspecified). false END