CODEWITHSUNDEEP
c#asp.net-coredependency-injection
Andre
Andre

Reputation: 702

Add DI for a Generic class in ConfigureServices

I want to register a generic class (this class is needed because I want to implement the patterns: Repository and Unit of work) in ConfigureServices in order to get dependency injection. But I do not know how.

Here my interface:

public interface IBaseRepository<TEntity> where TEntity : class
{
    void Add(TEntity obj);

    TEntity GetById(int id);

    IEnumerable<TEntity> GetAll();

    void Update(TEntity obj);

    void Remove(TEntity obj);

    void Dispose();
}

Its implementation:

public class BaseRepository<TEntity> : IDisposable, IBaseRepository<TEntity> where TEntity : class
{

    protected CeasaContext context;

    public BaseRepository(CeasaContext _context)            
    {
        context = _context;
    }
   /*other methods*/
}

And what I'm trying to do:

public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc();
        var connection = @"Data Source=whatever;Initial Catalog=Ceasa;Persist Security Info=True;User ID=sa;Password=xxx;MultipleActiveResultSets=True;";

        services.AddDbContext<CeasaContext>(options => options.UseSqlServer(connection));

        services.AddTransient<BaseRepository, IBaseRepository>();

    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
            app.UseBrowserLink();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
        }

        app.UseStaticFiles();

        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Home}/{action=Index}/{id?}");
        });
    }
}

Upvotes: 3

Views: 1160

Answers (2)

Anton Gridushko
Anton Gridushko

Reputation: 31

But how is about this moment?

services.AddScoped(typeof(IGenericRepository<T,TK>), typeof(GenericRepository<T, TK>));

When we have as T, so TK here in these brackets <> The compiler does not allow to do this in such syntax.

Upvotes: -1

Nkosi
Nkosi

Reputation: 247088

For open generics add services as follows

services.AddTransient(typeof(IBaseRepository<>), typeof(BaseRepository<>));

Thus all dependencies on IBaseRepository<TEntity> will be resolved to BaseRepository<TEntity>

Upvotes: 8

Related Questions