Get last/next week Wednesday date in C#

Question

How would I get last week Wednesday and next week Wednesday\'s date in C#:

public Form1()
{
   InitializeComponent();
   CurrentDate.Text = \"Today\'s Date: \" +         


        

Answer 1

You could create 2 DateTime Extension methods, that can be used with a DayOfWeek parameter:

public static class DateTimeExtension
{
    public static DateTime GetPreviousWeekDay(this DateTime currentDate, DayOfWeek dow)
    {
        int currentDay = (int)currentDate.DayOfWeek, gotoDay = (int)dow;
        return currentDate.AddDays(-7).AddDays(gotoDay-currentDay);
    }

    public static DateTime GetNextWeekDay(this DateTime currentDate, DayOfWeek dow)
    {
        int currentDay = (int)currentDate.DayOfWeek, gotoDay = (int)dow;
        return currentDate.AddDays(7).AddDays(gotoDay - currentDay);
    }
}

Which can then be used as follows:

DateTime testDate = new DateTime(2017, 01, 21);

Console.WriteLine(testDate.GetPreviousWeekDay(DayOfWeek.Wednesday));
Console.WriteLine(testDate.GetNextWeekDay(DayOfWeek.Wednesday));