Dates, Times, and Formatting

Date Basics

Create a fixed date and read its parts.

Date Basics

DateBasics.cs 
using System;
using System.Globalization;

class Program
{
    static void Main()
    {
        int day = ;
        DateTime lessonDate = new DateTime(2026, 3, day);
        string isoDate = lessonDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);
        string month = lessonDate.Month.ToString(CultureInfo.InvariantCulture);

        Console.WriteLine($"date={isoDate}");
        Console.WriteLine($"month={month}");
    }
}

using System;
using System.Globalization;

class Program
{
    static void Main()
    {
        int day = ;
        DateTime lessonDate = new DateTime(2026, 3, day);
        string isoDate = lessonDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);
        string month = lessonDate.Month.ToString(CultureInfo.InvariantCulture);

        Console.WriteLine($"date={isoDate}");
        Console.WriteLine($"month={month}");
    }
}

using System;
using System.Globalization;

class Program
{
    static void Main()
    {
        int day = ;
        DateTime lessonDate = new DateTime(2026, 3, day);
        string isoDate = lessonDate.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);
        string month = lessonDate.Month.ToString(CultureInfo.InvariantCulture);

        Console.WriteLine($"date={isoDate}");
        Console.WriteLine($"month={month}");
    }
}
dates A `DateTime` can represent a calendar date with year, month, and day parts.