built-in date time fuctions in c# code example
Example 1: c# datetime
var dat1 = new DateTime();
// The following method call displays 1/1/0001 12:00:00 AM.
Console.WriteLine(dat1.ToString(System.Globalization.CultureInfo.InvariantCulture));
// The following method call displays True.
Console.WriteLine(dat1.Equals(DateTime.MinValue));
Example 2: instantiate date time variable C#
DateTime dtDate = new DateTime(2020,1,1);