Dependency Injection on Authorization Policy

Question

I want to create a claim based authorization for my ASP.NET Core app:

public void ConfigureServices(IServiceCollection services)
{
    services.AddAuthorizat         


        

Answer 1

You can build a service provider using the BuildServiceProvider() method on the IServiceCollection:

public void ConfigureServices(IServiceCollection services)
    {
        services.AddSingleton();

        var sp = services.BuildServiceProvider();
        var employeeProvider = sp.GetService();
        string[] values = employeeProvider.GetAuthorizedEmployeeIds();

        services.AddAuthorization(options =>
        {

            options.AddPolicy("Founders", policy =>
                      policy.RequireClaim("EmployeeNumber", employeeProvider.GetAuthorizedEmployeeIds()));
        });
        services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
    }

interface and Class

public interface IEmployeeProvider
{
    string[] GetAuthorizedEmployeeIds();
}

public class EmployeeProvider : IEmployeeProvider
{
    public string[] GetAuthorizedEmployeeIds()
    {
        var data = new string[] { "1", "2", "3", "4", "5" };
        return data;
    }
}