In C#, project a date in the future and ensure it does not fall on the weekend

prevent-weekends.cs

using System;

public static class DateExtensions
{
    static DateTime PreventWeekend(this DateTime dateTime)
    {
        switch (dateTime.DayOfWeek)
        {
            case DayOfWeek.Saturday:
                return dateTime.AddDays(2);
            case DayOfWeek.Sunday:
                return dateTime.AddDays(1);
            default:
                return dateTime;
        }
    }
    
    // Example Usage
    static DateTime Calculate24Hour(this Datetime dateTime) => dateTime.AddHours(20).PreventWeekend();
}