ASP.NET 5 - Access to Dependency Container in Startup.Configure

Question

I want to access my Options instance which is added as singleton in ConfigureServices. Here is my code:

public class Startup
{
    private IConfiguration Configuration { get; set; }

    public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
    {
        var builder = new ConfigurationBuilder(appEnv.ApplicationBasePath)
            .AddJsonFile("config.json")
            .AddEnvironmentVariables();

        Configuration = builder.Build();
    }
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddSingleton((serviceProvider) => ConfigurationBinder.Bind<Options>(Configuration));
    }

    public void Configure(IApplicationBuilder app)
    {
        var root = ""; // I want to access my Options instance to get root from it
        var fileServerOptions = new FileServerOptions()
        {
            FileProvider = new PhysicalFileProvider(root)
        };
        app.UseFileServer(fileServerOptions);
    }
}

My question is how to access instance of Options in Configure method to set root variable.

I answered a similar question here http://stackoverflow.com/questions/31541944/how-to-use-configurationbinder-in-configure-method-of-startup-cs — Joe Audette, Aug 09 '15 at 18:18

score 0 · Answer 1 · answered Aug 10 '15 at 04:33

0

According to Joe Audette's comment this is the solution:

var options = app.ApplicationServices.GetService<Options>();

answered Aug 10 '15 at 04:33

alisabzevari

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score 0 · Accepted Answer · edited May 23 '17 at 12:15

0

As suggested in How to use ConfigurationBinder in Configure method of startup.cs, the runtime can inject the options directly into the Configure method:

public void Configure(IApplicationBuilder app, Options options)
{
    // do something with options
}

edited May 23 '17 at 12:15

Community

1
1

answered Aug 10 '15 at 08:00

Henk Mollema

44,194
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Thanks, that's a nice solution. – alisabzevari Aug 10 '15 at 08:09

ASP.NET 5 - Access to Dependency Container in Startup.Configure

2 Answers2