如何获取ASP.NET Core5.0授权策略要求中的用户输入参数？

services.AddAuthorization(options =>
{
    options.AddPolicy("MyPolicy", policy =>
    {
        policy.Requirements.Add(new MyRequirement());
    });
});

public class MyRequirement : IAuthorizationRequirement
{
    public string Role { get; set; }
    public int Age { get; set; }

    public MyRequirement(string role, int age)
    {
        Role = role;
        Age = age;
    }
}

public class MyHandler : AuthorizationHandler<MyRequirement>
{
    protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, MyRequirement requirement)
    {
        // 获取用户输入参数
        string role = requirement.Role;
        int age = requirement.Age;

        // 进行授权逻辑
        if (context.User.IsInRole(role) && context.User.GetAge() >= age)
        {
            context.Succeed(requirement);
        }

        return Task.CompletedTask;
    }
}

services.AddSingleton<IAuthorizationHandler, MyHandler>();