This tutorial will show you how to publish ASP.NET Core on IIS. The following is steps by steps to deploy .net Core.

Program class in asp.net core 2.0 contains a method that is called “CreateDefaultBuilder”. It is responsible for setting up everything for your application related to hosting, manage server, IIS integration, create directory etc.

public class Program {  
    public static void Main(string[] args) {  
        BuildWebHost(args).Run();  
    }  
    public static IWebHost BuildWebHost(string[] args) => WebHost.CreateDefaultBuilder(args).UseStartup < Startup > ().Build();  
}

Just go through with CreateDefaultBuilder method's actual definition using F12 in Visual Studio, you can read the comment which specifies its tasks.

The deployment is not the same as Asp.Net, there are a few more components required to host your asp.net core 2.0 application on IIS. Before deploying, you have to install a bundle which is required to host Asp.Net Core 2.0 application on IIS and that is .Net Core Windows Server Hosting. This bundle will install .Net Core Runtime which provides all the required libraries on runtime, .Net Core Library and Asp.Net Core Module.

If you are still using Asp.Net Core 1.x then you can find out the “.Net Core Windows Server Hosting” bundle using the following link and install it.

Here we are using Asp.Net Core 2.0 application to deploy it on IIS, so we are going to download .Net Core Windows Server Hosting bundle from following link and install it with our system.

When it is in progress, you can see it is installing three main components: .Net Core Runtime, .Net Core Library and Asp.Net Core Module. As you can see in the following image, Microsoft .Net Core Runtime is being installed.

Warning

Please make sure you have restarted your system before moving to the next step after the installation of “Microsoft .Net Core Windows Server Hosting” bundles.

For this demonstration, we are using the same Asp.Net Core 2.0 application which we have created in previous article. To learn how to create First application in Asp.Net Core 2, please refer to following article.

First Application In ASP.NET Core MVC 2.0

Let’s move to Visual Studio 2017 version 15.3 which provides .Net Core 2 features.  Open the Asp.Net Core 2.0 application which we have created in last article. Open the solution explorer and right click to project and choose Publish option for publishing this web application.

It will open a new windows as following, which provide us three different options to publish our web application and these options are “Azure”, “IIS,FTP” and “Folder”. So, here are choosing “Folder” to publish our web content”. You have to provide the destination path where you would like to publish web application and then click to “Publish”.

It will start publishing content on selected folder as following image shown. Once everything will fine, it will show Publish Successes message.

Now it’s time to create a new website inside the IIS Manager, to open IIS Manager, just type “inetmgr” in “Search Program and files” in start menu. It will open IIS Manager for you as following image shown where you can manage you application.

Just right click to “Sites” and choose “Add Web Site..”.

In next window, you have to define you “Site Name”, physical path where you have published you application earlier and host name to find on web browser as below image. Don’t change Port and anything else and just click to OK.

Now we are almost done but need to change the “Application Pools” for this site. Click to application pools from the left panel and choose you pools as “asp.netcore2.com” and double click on that. Now you can edit you “Application Pool” for this website. From this window, you have to changes “.Net Framework  version” or “.Net CLR version” with “No Managed Code” and OK. 

Last thing, what you need to do, just make one entry about your application inside the host file, which is located on the following location. You have to add one more entry as we have done for asp.netcore2.com which directly points to localhost IP address.

C:\Windows\System32\drivers\etc

The time has come to run the application on the browser, so open any browser and just type asp.netcore2.com and press enter. Wow… you will get the following screen, which means the application has successfully hosted on IIS.