Help with Daysofweek method in Asp . net

Question

I am one creating an api using Asp.Net that performs task listings and these tasks are displayed per day, week, month and year, my doubt is on how to perform this call only for the current week that I am, I am not able to do this way below, I would like help.

    [HttpGet("filter/week/{macAddress}")]
    public async Task<IActionResult> Week(string macAddress)
    {
        try
        {
            var result = await _repo.GetTodosItens(macAddress);

            var week = result.AsQueryable<TaskModel>().Where(t => t.When.DayOfWeek == DateTime.Now.DayOfWeek);

            return Ok(week);
        }
        catch (Exception ex)
        {
            return BadRequest($"Erro: {ex.Message}");
        }
    }

Answer 1

I was doing wrong, with the help of a co-worker, he passed me the following method:

    private static int GetWeekNumber(DateTime date)
    {
        System.Globalization.CultureInfo currentCulture = System.Globalization.CultureInfo.CurrentCulture;
        System.Globalization.Calendar currentCalendar = currentCulture.Calendar;

        return
            currentCalendar.GetWeekOfYear(date,
                                          currentCulture.DateTimeFormat.CalendarWeekRule,
                                          currentCulture.DateTimeFormat.FirstDayOfWeek);

    }

With it it is possible to pass the date and it returns the week that I am, with this I can compare with the current week