In legacy ASP.Net and .Net in general, sending mail was accomplished via System.Net.Mail
classes which resided in System.dll
. Now with KRE, vNext doesn't seem to have System.Net.Mail
as a separate package.
Referencing the "net453"
framework in project.json
"frameworks": {
"aspnet50": { },
"aspnetcore50": { },
"net453": {} // <<< throws compilation errors
},
causes all hell to break loose with errors like:
.NET Framework 4.5.3 error CS0234: The type or namespace name 'AspNet' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?)
It virtually complains about all vNext dependencies that are part of kpm packages.
So, has anyone figured out a way to send mails using ASP.Net vNext yet?
Note
Even though System
appears under References and even though Intellisense shows System.Net.Mail
is available for use, the code doesn't compile. E.g., a simple statement like this, although appears valid,
using System.Net.Mail;
var m = new MailMessage();
will throw compilation error such as:
ASP.NET Core 5.0 error CS0234: The type or namespace name 'Net' does not exist in the namespace 'System' (are you missing an assembly reference?)
ASP.NET Core 5.0 error CS0246: The type or namespace name 'MailMessage' could not be found (are you missing a using directive or an assembly reference?)
Update
With latest Visual Studio 2015 CTP 5, they seemed to have fixed the intellisense glitch. Now System.Net
doesn't have Mail
namespace anymore. On a side note, the vNext project I created with VS 2015 preview is no longer working - I get an 403.3 error on the home page! Ah, the joy of working with beta software!
Sending emails from C# using an SMTP server requires only a few lines of code: var smtpClient = new SmtpClient("smtp.gmail.com") { Port = 587, Credentials = new NetworkCredential("username", "password"), EnableSsl = true, }; smtpClient. Send("email", "recipient", "subject", "body");
For sending email we need a SMTP Server, so in ASP.Net we have the SmtpClient class, using that class object we set its properties for the SMTP settings. SmtpClient client = newSmtpClient("smtp.gmail.com", 587);
Allows applications to send email by using the Simple Mail Transfer Protocol (SMTP). The SmtpClient type is obsolete on some platforms and not recommended on others; for more information, see the Remarks section.
To use System.Net.Mail
your app can target only aspnet50
. The aspnetcore50
target has no such support (at least, not right now, as far as I know).
You shouldn't ever have your app target net453
(which, as Luca mentioned in a comment, has since been renamed anyway) because ASP.NET 5 apps don't run on that platform.
An app that targets aspnet50
can generally reference any .NET 4.0+ NuGet package or GAC reference.
So, in your case, remove the net453
and aspnetcore50
targets, and within the aspnet50
target add a framework reference to System.Net.Mail
.
A complete alternative would be to find some other existing NuGet package that has support for sending email in both aspnet50
and aspnetcore50
, but I doubt such a package exists at this time (though it no doubt will at some point in the future).
To follow up... .NET team has stated that porting System.Net.Mail will be less than straightforward and will likely take a while. That's a bummer since a production website usually does more than a little email sending.
In the meantime, someone just released a Core-Clr compatible email API called MailKit. You can read about it here https://github.com/jstedfast/MailKit/issues/212
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