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: " + DateTime.Now.ToString("dd/MM/yyyy");    CurrentRent.Text = "Current Rent Date: "; // last wednesday    NextRent.Text = "Next Rent Date: "; // next wednesday } 

Answer 1

To find the next Wednesday just keep adding days until you find one. To find the previous Wednesday just keep subtracting days until you get to one.

DateTime nextWednesday = DateTime.Now.AddDays(1); while (nextWednesday.DayOfWeek != DayOfWeek.Wednesday)     nextWednesday = nextWednesday.AddDays(1); DateTime lastWednesday = DateTime.Now.AddDays(-1); while (lastWednesday.DayOfWeek != DayOfWeek.Wednesday)     lastWednesday = lastWednesday.AddDays(-1); 

Answer 2

Use the AddDays routine:

        // increment by the number of offset days to get the correct date         DayOfWeek desiredDay = DayOfWeek.Wednesday;         int offsetAmount = (int) desiredDay - (int) DateTime.Now.DayOfWeek;         DateTime lastWeekWednesday = DateTime.Now.AddDays(-7 + offsetAmount);         DateTime nextWeekWednesday = DateTime.Now.AddDays(7 + offsetAmount); 

That should do it!

NOTE: If it is a Monday, "Last Wednesday" is going to give you the very last Wednesday that occurred, but "Next Wednesday" is going to give you the Wednesday 9 days from now! If you wanted to get the Wednesday in two days instead you would need to use the "%" operator. That means the second "nextweek" statement would read "(7 + offsetAmount) % 7".