This workshop will be retired on May 1, 2025.
Heads up! To view this whole video, sign in with your Courses Plus account or enroll in your free 7-day trial. Sign In Enroll
Well done!
You have completed Getting Started with ASP.NET Core!
You have completed Getting Started with ASP.NET Core!
Preview
Now that we have our console app project, let's see what it takes to convert it to a simple web app.
Additional Learning
Related Discussions
Have questions about this video? Start a discussion with the community and Treehouse staff.
Sign upRelated Discussions
Have questions about this video? Start a discussion with the community and Treehouse staff.
Sign up
Let's convert our console app
project to a simple web app.
0:00
We'll start by adding a dependency for
Kestrel.
0:03
Remember, Kestrel is the cross-platform
managed web server for
0:06
hosting ASP.NET Core apps.
0:11
First, we add the name
of the new get package.
0:14
Microsoft.AspNetCore.Server.Kestrel.
0:18
Then we provide the version
number that we want to use.
0:26
Which in our case is 1.0.0.
0:30
When we save the file, code will recognize
that we just added a new dependency,
0:34
then ask if we want to
run the restore command.
0:38
Next, we'll open Program.cs and
make some modifications.
0:42
First, we need to add
the following name spaces,
0:50
using Microsoft.AspNetCore.Hosting.
0:55
Using Microsoft.AspNetCore.Builder.
0:59
Then using Microsoft.AspNetCore.Http.
1:05
Then in the main method, we need to
instantiate and configure the host for
1:11
our web app.
1:16
Var host = new WebHostBuilder.
1:20
We need to tell the host to use Kestrel
as the server by calling the UseKestrel
1:25
extension method.
1:29
Then we configure the host by
calling the Configure method.
1:32
The Configure method expects
a delegate that accepts a parameter for
1:38
the IApplicationBuilder instance.
1:42
Which we can use to configure our app.
1:44
On the app builder,
we call the Run method.
1:48
The Run method also expects a delegate
that accepts a parameter for
1:56
the HTTP context for the current request.
2:00
The context gives us
access to the Response.
2:05
On which is an extension method,
WriteAsync,
2:09
that allows us to write
asynchronously to the response body.
2:12
Our Run delegate represents a very
simple middleware component.
2:21
We'll see more examples of ASP.NET Core
middleware later in this workshop.
2:25
Lastly, we Build and Run the host.
2:30
Now we can press F5 to
run our application.
2:37
Once the application has been started,
we can browse to the URL localhost:5000.
2:44
And here's the output from our middleware.
2:54
When you create a web app project using
the .NET CLI or the full version of
3:01
Visual Studio, the contents of the
Program.cs file will be provided for you.
3:05
So you typically won't
write this code yourself.
3:11
That being said, you can see that it's
relatively easy to get a web app host and
3:14
server up and running.
3:18
Also, our web app isn't very indicative
3:20
of what a typical ASP.NET Core
web app looks like.
3:23
Rather, this is an example
of the smallest,
3:26
simplest web app that you can build.
3:29
Though it's not a very practical solution.
3:31
For instance,
most ASP.NET Core web apps will use MVC
3:34
instead of directly writing to
the response body, as we did here.
3:39
We'll see an example of an MVC
web app in the next video.
3:43
You need to sign up for Treehouse in order to download course files.
Sign upYou need to sign up for Treehouse in order to set up Workspace
Sign up