Csharp ASP.NET Core：如何在IPageFilter中注入ApplicationDbContext

ASP.NET Core 6:我试图为Razor页面创建一个IPageFilter，这个过滤器将需要使用在DI容器中注册的ApplicationDbContext.

在我的过滤器中，我在构造函数中注入了ApplicationDbContext，但是当我用它装饰Razor页面时，它显示了一个错误，即我没有注入上下文.正确的方法是什么？

过滤器:

[AttributeUsage(AttributeTargets.Class)]
public class CustomPageFilterAttribute : Attribute, IAsyncPageFilter 
{
    protected ApplicationDbContext _db;

    public CustomPageFilterAttribute(ApplicationDbContext db) 
    {
        _db = db;
    }

    public Task OnPageHandlerSelectionAsync(PageHandlerSelectedContext context) 
    {
        var something = _db.Customers.Find(1);
        return Task.CompletedTask;
    }

    // Executes last
    public async Task OnPageHandlerExecutionAsync(PageHandlerExecutingContext context, PageHandlerExecutionDelegate next) 
    {
        // Before action execution
        await next();
        // After action execution
    }
}

Razor页面:

[CustomPageFilterAttribute]
public class ConfigUsuarioModel : PageModel
{
    private readonly ApplicationDbContext _db;

    [BindProperty]
    public ConfigUsuario _configUsuario { get; set; }

    [TempData]
    public string StatusMessage { get; set; }

    //ctor
    public ConfigUsuarioModel(ApplicationDbContext db) 
    {
        _db = db;
    }
}

在Program.cs个MVC项目中注册DbContext:

builder.Services.AddDbContext<ApplicationDbContext>(options => options.UseSqlServer(connectionString, sqlServerOptions => sqlServerOptions.CommandTimeout(90)));

intellisense标记用[CustomPageFilterAttribute]装饰PageModel时的错误:

没有给定的参数对应于所需参数 'db'of 'CustomPageFilterAttribute. CustomePageFilterAttribute(ApplicationDbContext)'