@code{ /// /// /// [Inject] public ToastService? ToastService { get; set; } private Toast? Toast { get; set; } protected void OnPlacementClick(Placement placement) { Toast?.SetPlacement(placement); ToastService?.Show(new ToastOption() { Category = ToastCategory.Information, Title = "消息通知", Content = "Toast 组件更改位置啦,4 秒后自动关闭" }); } }