DI and Simple Code

[ShervanN]

Hi,

I wrote the following code to learn Dependency Injection.
Is it true? Could you please check this code?

Thanks

namespace ForTest
{
    interface IEmail
    {
        public void Send();
    }
    class Email
    {
        private IEmail _iEmail;
        public Email(IEmail iEmail)
        {
            _iEmail = iEmail;
        }
        public void SentEmails()
        {
            _iEmail.Send();
        }
    }
    class EmailService : IEmail
    {
        public void Send()
        {
            Console.WriteLine("Sent!");
        }
    }
    internal class Program
    {
        static void Main(string[] args)
        {
            Email myEmail = new Email(new EmailService());
            myEmail.SentEmails();

            Console.ReadKey();
        }

    }
}

[christiannagel]

What do you mean by "is it true"?
Regarding dependency injection - yes, you inject the EmailService wich implements IEmail into the Email class. You can create different providers implementing IEmail (e.g. a test provider, a provider using SMPT, a provider using Office 365...), and use all these with your Email class.

I just would rename the IEmail interface to IEmailSender. With IEmail I would think more about the email content such as addresses, header, content...