How to do it...

1. Open Visual Studio 2017.
2. Now, open the solution from the previous recipe. Click File | Open | Open Project/Solution, or press Ctrl + Shift + O, and select the Chapter1.StandardLib solution. 

1. Now click on the Chapter1.Library solution label. Click File | Add | New Project.
2. In the Add New Project template dialog box, expand the Visual C# node in the left-hand pane. Select Web and select ASP.NET Core Web Application from the right-hand pane:

1. In the Name: text box, type Chapter1.StandardLib.AspNetCore as the name of the project and leave the Location: as it is:

1. Click OK.

1. Now, in the New ASP.NET Core Web Application dialog box, select .NET Core from the first drop-down list and ASP.NET Core 2.0 from the second drop-down list. Finally, select Web Application (Model-View-Controller) from the templates list:

1. Leave the defaults as they are and Click OK.

1. Now, the Solution Explorer should look like this: 

1. Select the Chapter1.StandardLib.AspNetCore project, right-click, and select Set as Startup Project. 

1. Now hit F5 for a test run. If everything is running smoothly, you should see this default ASP.NET Core template running on your default browser:

Default ASP.NET Core template running on your default browser

1. Let's close the browser and add our .NET Standard class library as a reference. To do this, expand the Chapter1.StandardLib.AspNetCore project tree and select Dependencies.
2. Right-click on the Dependencies label and select Add Reference. 

1. Under the Reference Manager dialog box, click on the Projects label in the left-hand pane. In the middle pane, check the Chapter1.StandardLib.HelloUniverse project and click OK.

1. Let's expand the Controllers folder and double-click HomeController.cs.
2. In HomeController.cs, add this code right next to the last line of the using directive block:

      using Chapter1.StandardLib;

1. Now, inside the About() action, add the following code block after the ViewData["Message"] line (by default, this is after line 21 in the default template): 

      var myName = "Fiqri Ismail"; 
      var helloMessage = new HelloUniverse();
      ViewData["HelloMessage"] = helloMessage.SayHello(myName);

1. Now expand the Views folder. Again, expand the Home folder as well.
2. Double-click on About.cshtml.
3. At the end of About.cshtml, add the following code:

      <p>@ViewData["HelloMessage"]</p>

1. Now press F5 to see it in action.

1. You will see the default ASP.NET Core template in the browser. Now click About to view the About.cshtml page: 

About.cshtml page

1. Excellent, now you have used a .NET Standard 2.0 library with an ASP.NET Core 2.0 web application.