DateTime now = DateTime.Now;
string dateStr = "2022-05-01"; DateTime date = DateTime.Parse(dateStr);
int year = 2024; bool isLeapYear = DateTime.IsLeapYear(year);
DateTime start = new DateTime(2022, 01, 01); DateTime end = new DateTime(2022, 12, 31); TimeSpan difference = end - start;Overall, the System DateTime package library is a useful tool for working with date and time values in C# programming.