canvasManagement/Management.Web/Shared/Components/Quiz/QuizSettings.razor

@using Management.Web.Shared.Components

@inject QuizEditorContext quizContext

@code {
  protected override void OnInitialized()
  {
    quizContext.StateHasChanged += reload;
  }
  private void reload()
  {
    if (quizContext.Quiz != null)
    {
      if (!lockAtDueDate)
        lockAtDueDate = quizContext.Quiz.LockAtDueDate;
      if (lockAt == null)
        lockAt = quizContext.Quiz.LockAt;
      if (!shuffleAnswers)
        shuffleAnswers = quizContext.Quiz.ShuffleAnswers;
      if (!oneQuestionAtATime)
        oneQuestionAtATime = quizContext.Quiz.OneQuestionAtATime;
      if (allowedAttempts == 0)
        allowedAttempts = quizContext.Quiz.AllowedAttempts;

      this.InvokeAsync(this.StateHasChanged);
    }
  }
  public void Dispose()
  {
    quizContext.StateHasChanged -= reload;
  }

  private bool lockAtDueDate { get; set; }
  private DateTime? lockAt { get; set; }
  private bool shuffleAnswers { get; set; }
  private bool oneQuestionAtATime { get; set; }
  private int allowedAttempts { get; set; }

  private void handleLockAtDueDateChange()
  {
    if(quizContext.Quiz != null)
    {
      var newValue = !quizContext.Quiz.LockAtDueDate;

      var newQuiz = newValue
        ? quizContext.Quiz with
          {
            LockAtDueDate = newValue,
            LockAt = quizContext.Quiz.DueAt
          }
        : quizContext.Quiz with
          {
            LockAtDueDate = newValue
          };
      quizContext.SaveQuiz(newQuiz);
    }
  }
}

<div>
  <div class="form-check form-switch">
    <input 
      class="form-check-input" 
      type="checkbox"
      role="switch" 
      id="lockAtDueDate"
      checked="@lockAtDueDate"
      @onchange="handleLockAtDueDateChange">
    <label 
      class="form-check-label" for="lockAtDueDate">
      Lock at Due Date
    </label>
  </div>
</div>