using System;
using System.Globalization;

public class Test
{
	public static void Main()
	{
		CultureInfo provider = CultureInfo.InvariantCulture;

        // Defining Format and Testing it via "DateTime.ToString(format)"
        string format = "MM/dd/yyyy HH:mm:ss tt"; 
        string dtNow  = DateTime.Now.ToString (format, provider);
        Console.WriteLine (dtNow);

        // Trying to Parse DateTime on the same Format defined Above
        DateTime time;
       if (DateTime.TryParseExact (dtNow, format, provider, DateTimeStyles.None, out time))
       {
           // If TryParseExact Worked
           Console.WriteLine ("Result: " + time.ToString ());  
       }
       else
       {
           // If TryParseExact Failed
           Console.WriteLine ("Failed to Parse Date");
       }
	}
}