inject and use services in program.cs pipeline

Question

I have a service that I need to inject and use inside the project pipeline

//Register Service
builder.Services.AddScoped<IDbInitializer, DbInitializer>();

//Build App and Inject Service
var app = builder.Build();
var dbInitializer = app.Services.GetService<IDbInitializer>();

//Use 
dbInitializer.Initialize();

I will update the following problem when injecting this service (or any other service)

problem image

ErroneousFatality · Accepted Answer · 2023-03-20T05:36:04.917

1

In order to require a scoped service, you need to initiate a scope inside which it will live: https://learn.microsoft.com/en-us/aspnet/core/fundamentals/dependency-injection?view=aspnetcore-7.0#resolve-a-service-at-app-start-up

//Register Service
builder.Services.AddScoped<IDbInitializer, DbInitializer>();

//Build App and Inject Service
var app = builder.Build();
using (IServiceScope scope = app.Services.CreateScope())
{
    IDbInitializer dbInitializer = scope.ServiceProvider.GetRequiredService<IDbInitializer>();

    //Use 
    dbInitializer.Initialize();
}

edited Mar 20 '23 at 05:36

answered Mar 20 '23 at 05:16

ErroneousFatality

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Thanks, fixed But I used the following code to get the service ` var dbInitializer = serviceScope.ServiceProvider.GetRequiredService();` – Taqi ツ Mar 20 '23 at 05:28
Yeah, my bad, I accidentally ommited the `.ServiceProvider` part. Will edit it in right away. – ErroneousFatality Mar 20 '23 at 05:33

inject and use services in program.cs pipeline

1 Answers1