How to get connection string without DbOptions?

user_8172856 0
Viewed 195

I'm a project that doesn't need DbContext class, and I'm using BlobStorage DB on appsettings.json

This is my appsettings.json

{
  "ConnectionStrings": {
    "StorageConnectionString": "Connection"
 }

and I configure on Startup.cs class, without options, because I don't need DbContext right now

_configuration.GetConnectionString("StorageConnectionString");

But I need to call my connection string on my BlobStorageService class without pass connection string name (because is already on appsettings.json).

The question is: How I can call connectionString on Service class without pass the connection string name?

blobstorage connection-string .net
2 Answers

It works if I use

 Configuration.GetConnectionString("StorageConnectionString");

Getting IConfiguration and doing dependency injection inside my BlobStorageService.

user_81728560

How are you registering your BlobStorageService? If you're already retrieving your connection string within Startup.cs, you can always register your BlobStorageService with a string dependency to be used within the service at runtime.

In your BlobStorageService, you can require a string to be injected when the service is requested:

public class BlobStorageService : IBlobStorageService
{
    private readonly string _connectionString;

    public BlobStorageService(string connectionString)
    {
        _connectionString = connectionString;

        // Do whatever storage client initialization is required by the SDK...
    }
}

Then, in your Startup.cs, register your dependency with the connection string you've already retrieved at application startup:

public void ConfigureServices(IServiceCollection services)
{
    var yourConnectionString = Configuration.GetConnectionString("StorageConnectionString");
            
    // Register with the appropiate service lifetime
    services.AddTransient<IBlobStorageService>(_ => new BlobStorageService(yourConnectionString));

    // ...other dependencies
}
user_61114680
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