canvasManagement/Management.Web/Shared/Semester/MonthDetail.razor

@using System.Linq
@using Management.Web.Shared.Semester.Day

@inject CoursePlanner planner

@code
{
  [Parameter, EditorRequired]
  public CalendarMonth Month { get; set; } = default!;

  public DayOfWeek[] WeekDaysList { get => (DayOfWeek[])Enum.GetValues(typeof(DayOfWeek)); }

  public string MonthName { get => Month?.DaysByWeek.First().FirstOrDefault(d => d != null)?.ToString("MMMM") ?? ""; }
}

<h3 class="text-center">
  @MonthName
</h3>

<div class="row text-center fw-bold">
  @foreach (DayOfWeek day in WeekDaysList)
  {
    <div class="@(
        planner.LocalCourse?.DaysOfWeek.Contains(day) ?? false 
          ? "col" 
          : "col text-secondary"
      )"
    >
      @day
    </div>
  }
</div>

@foreach (var week in Month.DaysByWeek)
{
  <div class="row m-3">
  @foreach (var day in week)
    {
      <Day date="day"></Day>
    }
  </div>
}