初始化期间的Blazor WASM服务HTTP调用

Question

在我的项目中，当项目开始时，我想在本地获得所有配置信息。我创建了一个ConfigurationManager服务，并将HttpClient注入其中。在Blazor组件上有生命周期事件，如OnInitializedAsync，在组件创建时被调用。

protected override async Task OnInitializedAsync()
{
await ...
}

服务是否有类似的东西?

Program.cs包含以下

public static async Task Main(string[] args)
{
var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");
builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });
builder.Services.AddScoped<StateManager>();
await builder.Build().RunAsync();
}

Answer 1

使用builder.Servuces.AddScoped<StateManager>()添加状态管理器不提供对服务的引用，因此不可能调用非静态方法，所以我尝试了这个

public static async Task Main(string[] args)
{
var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");
var http = new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) };
builder.Services.AddScoped(sp => http);
var state = new StateManager(http);
builder.Services.AddScoped(sp => state);
await state.LoadAsync();
await builder.Build().RunAsync();
}