CODEWITHSUNDEEP
c#.net-coredependency-injection
Illep
Illep

Reputation: 16851

Adding dependency injection gives exception in .NET Core

I am getting the following exception. Why is it and how can I solve this?

In SMSService.cs when I comment on the constructor it starts to work, but I will require to access ISMSSender from it.

System.AggregateException: 'Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: Authentication.API.Repository.Interface.ISMSService Lifetime: Singleton ImplementationType: Authentication.API.Repository.SMSService': Unable to resolve service for type 'SMSSender.API.Repository.Interface.ISMSSender' while attempting to activate 'Authentication.API.Repository.SMSService'.)'

Authentication.API.Repository.SMSService

public class SMSService : ISMSService
{
    private readonly ISMSSender _smsSender;

    public SMSService(ISMSSender smsSender)
    {
        _smsSender = smsSender;
    }
}

Startup ...

         services.AddTransient<ISMSService, SMSService>();

         ...

SMSSender.API.Repository.Interface.ISMSSender

public interface ISMSSender
{
    Task<SMSUser> SendSMS(SMSUser prospectiveUser);
}

SMSSender.API.Repository.Interface.SMSSender

public class SMSSender : ISMSSender
{
    public async Task<SMSUser> SendSMS(SMSUser sMSUser)
    { }

}

Upvotes: 0

Views: 698

Answers (1)

Steve Harris
Steve Harris

Reputation: 5109

Looks like you didn't register the SMSSender (you did the service):

services.AddTransient<ISMSService, SMSService>();
services.AddTransient<ISMSSender, SMSSender>();

Upvotes: 4

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