@page "/sandbox"

<p>Current count: @currentCount</p>

<Counter @bind-Count="currentCount" />

@* <CascadingValue Value="45">
  <Composant1 />
</CascadingValue>

<Composant2 /> *@

@code {
  private int currentCount = 0;

  /*
  [CascadingParameter]
  public int Valeur { get; set; }
  */
}