/// <summary>
/// Subtracts given fortnights from the given DateTime.
/// </summary>
/// <param name="date">The given DateTime.</param>
/// <param name="fortnights">Number of fortnights to be subtracted.</param>
/// <returns>The DateTime after the given fortnights are subtracted.</returns>
public static DateTime SubtractFortnights(this DateTime date, int fortnights)
{
return(date.AddFortnights(fortnights.Negate()));
}
public void TestAddAddFortnights()
{
var day = new DateTime(2019, 11, 20);
Assert.Equal(day.AddDays(30).Date, day.AddFortnights(2).Date);
}
/// <summary>
/// Adds one fortnight to the given DateTime.
/// </summary>
/// <param name="date">The given DateTime.</param>
/// <returns>The DateTime after one fortnight is added.</returns>
public static DateTime AddAFortnight(this DateTime date)
{
return(date.AddFortnights(1));
}