messaging the provider in Asp.net

Question

i have a task to write a code that can message X number of provider for example via SMS or Email.

and it has to be by using "TryAddTransient".

Any solutions for that?

maybe it seems simple but i just started to learn Asp.

Answer 1

Hi @，

and it has to be by using "TryAddTransient". Any solutions for that?

It looks like you want to create and manage your service for sending emails or SMS. In this case, you can refer to the following simple example (send email):

IEmailService.cs 

public interface IEmailService
{
    Task SendEmailAsync(string to, string subject, string body);
}
public class EmailService : IEmailService
{
    private readonly SmtpClient _smtpClient;
    private readonly string _fromEmail;
    public EmailService(string smtpHost, int smtpPort, string fromEmail, string fromPassword)
    {
        _smtpClient = new SmtpClient(smtpHost, smtpPort)
        {
            Credentials = new NetworkCredential(fromEmail, fromPassword),
            EnableSsl = true
        };
        _fromEmail = fromEmail;
    }
    public async Task SendEmailAsync(string to, string subject, string body)
    {
        var mailMessage = new MailMessage(_fromEmail, to)
        {
            Subject = subject,
            Body = body,
            IsBodyHtml = true
        };
        await _smtpClient.SendMailAsync(mailMessage);
        Console.WriteLine($"Email sent to {to}: {subject}");
    }
}

Test with gmail below:

static async Task Main(string[] args)
{
    // Configuring Dependency Injection
    var services = new ServiceCollection();

    // Register for email service
    services.TryAddTransient<IEmailService>(provider =>
    {
        // Configuring SMTP Server Information
        string smtpHost = "smtp.gmail.com"; // SMTP server address
        int smtpPort = 587; // SMTP port
        string fromEmail = "******@gmail.com"; // sender email
        string fromPassword = "your app password";         
		return new EmailService(smtpHost, smtpPort, fromEmail,fromPassword);
    });

    var serviceProvider = services.BuildServiceProvider();

    // Parsing mail service
    var emailService = serviceProvider.GetRequiredService<IEmailService>();

    // send email
    string to = "recipient@example.com"; // Recipient's email
    string subject = "Test Email";
    string body = "<h1>Hello, this is a test email!</h1>";

    try
    {
        await emailService.SendEmailAsync(to, subject, body);
        Console.WriteLine("Email sent successfully!");
    }
    catch (Exception ex)
    {
        Console.WriteLine($"Failed to send email: {ex.Message}");
    }
}

Best regards,

Xudong Peng

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