C#•3y ago

❔ Why I am having issues to register my services.

The error I get is the following

System.AggregateException: Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: StatsByAlfaLaval.Application.Services.TextService.ITextService Lifetime: Scoped ImplementationType: StatsByAlfaLaval.Application.Services.TextService.TextService': Unable to resolve service for type 'System.Net.Http.HttpClient' while attempting to activate 'StatsByAlfaLaval.Application.Services.TextService.TextService'

System.AggregateException: Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: StatsByAlfaLaval.Application.Services.TextService.ITextService Lifetime: Scoped ImplementationType: StatsByAlfaLaval.Application.Services.TextService.TextService': Unable to resolve service for type 'System.Net.Http.HttpClient' while attempting to activate 'StatsByAlfaLaval.Application.Services.TextService.TextService'

How i register my services

public static IServiceCollection AddApplication(this IServiceCollection services)
    {
        services.AddScoped<IAuthenticationService, AuthenticationService>();
        services.AddScoped<ITextService, TextService>();
        
        return services;
    }

public static IServiceCollection AddApplication(this IServiceCollection services)
    {
        services.AddScoped<IAuthenticationService, AuthenticationService>();
        services.AddScoped<ITextService, TextService>();
        
        return services;
    }

Then i implement that into the program.cs where my builder resides

var builder = WebApplication.CreateBuilder(args);
{
    builder.Services
        .AddApplication()
        .AddInfrastructure();
    
    builder.Services.AddControllers();
}

var builder = WebApplication.CreateBuilder(args);
{
    builder.Services
        .AddApplication()
        .AddInfrastructure();
    
    builder.Services.AddControllers();
}

Does anyone have any idea why this is not working? If i remove my latest service it works fluently. I suspect my httpclient request

public class TextService : ITextService
{
    private readonly HttpClient _httpClient;
    public TextService(HttpClient httpClient)
    {
        _httpClient = httpClient; 
    }

public class TextService : ITextService
{
    private readonly HttpClient _httpClient;
    public TextService(HttpClient httpClient)
    {
        _httpClient = httpClient; 
    }

3 Replies

Cracker•3y ago

You are not injecting HttpClient through interface Can you try with IHttpClient ?

HerculesOP•3y ago

This made my app spin again

private readonly HttpClient _httpClient;
    public TextService(IHttpClientFactory httpClient)
    {
        _httpClient = httpClient.CreateClient();
    }

private readonly HttpClient _httpClient;
    public TextService(IHttpClientFactory httpClient)
    {
        _httpClient = httpClient.CreateClient();
    }

Accord•3y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ Why I am having issues to register my services.

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