VRSystem/tmptestproject/BlazorWeb1/Components/Pages/BuyPizza.razor

@using BlazorWeb1.Models
@using BlazorWeb1.Server
@rendermode InteractiveServer
@inject PizzaSalesState salesState;
 
<p>Today, we've sold this many pizzas: @salesState.PizzasSoldToday</p>
<button @onclick="IncrementSales">Buy a Pizza</button>
@code {
    private void IncrementSales()
    {
        salesState.PizzasSoldToday++;
    }
}