using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        string locale = "nb-NO";

        CultureInfo culture = CultureInfo.CreateSpecificCulture(locale);

        string shortDateFormatString = culture.DateTimeFormat.ShortDatePattern;

        string shortTimeFormatString = culture.DateTimeFormat.ShortTimePattern;

        string dateTimeString = culture.DateTimeFormat.FullDateTimePattern;

        string outputPattern = shortDateFormatString + " " + shortTimeFormatString;

        DateTime parsedDateTime1;

        string datetime1 = "06.12.2017 12:34";

        DateTime parsedDateTime2;

        string datetime2 = "06.12.2017 12.34";

        var result1 = DateTime.TryParse( 

            datetime1, 

            culture, 

            DateTimeStyles.None, 

            out parsedDateTime1

        );

        Console.WriteLine(parsedDateTime1.ToString(outputPattern));

        var result2 = DateTime.TryParse( 

            datetime2, 

            culture, 

            DateTimeStyles.None, 

            out parsedDateTime2

        );

​

        Console.WriteLine(parsedDateTime2.ToString(outputPattern));

        Console.WriteLine(result1 == result2);

    }

}