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Now listening on: http://localhost:5000 |
Application started. Press Ctrl+C to shut down. |
Instead of printing to the console and exiting, this program starts a web |
server and waits for requests on port 5000. |
Open your web browser and navigate to http://localhost:5000 . You'll |
see the default ASP.NET Core splash page, which means your project is |
working! When you're done, press Ctrl-C in the terminal window to stop |
the server. |
The parts of an ASP.NET Core project |
The dotnet new mvc template generates a number of files and |
directories for you. Here are the most important things you get out of |
the box: |
The Program.cs and Startup.cs files set up the web server and |
ASP.NET Core pipeline. The Startup class is where you can add |
middleware that handles and modifies incoming requests, and serves |
things like static content or error pages. It's also where you add your |
own services to the dependency injection container (more on this |
later). |
The Models, Views, and Controllers directories contain the |
components of the Model-View-Controller (MVC) architecture. |
You'll explore all three in the next chapter. |
16 |
Create an ASP.NET Core project |
The wwwroot directory contains static assets like CSS, JavaScript, |
and image files. Files in wwwroot will be served as static content, |
and can be bundled and minified automatically. |
The appsettings.json file contains configuration settings ASP.NET |
Core will load on startup. You can use this to store database |
connection strings or other things that you don't want to hard-code. |
Tips for Visual Studio Code |
If you're using Visual Studio Code for the first time, here are a couple of |
helpful tips to get you started: |
Open the project root folder: In Visual Studio Code, choose File - |
Open or File - Open Folder. Open the AspNetCoreTodo folder (the |
root directory), not the inner project directory. If Visual Studio Code |
prompts you to install missing files, click Yes to add them. |
F5 to run (and debug breakpoints): With your project open, press F5 |
to run the project in debug mode. This is the same as dotnet run |
on the command line, but you have the benefit of setting |
breakpoints in your code by clicking on the left margin: |
Lightbulb to fix problems: If your code contains red squiggles |
(compiler errors), put your cursor on the code that's red and look for |
the lightbulb icon on the left margin. The lightbulb menu will suggest |
17 |
Create an ASP.NET Core project |
common fixes, like adding a missing using statement to your code: |
Compile quickly: Use the shortcut Command-Shift-B or Control- |
Shift-B to run the Build task, which does the same thing as dotnet |
build . |
These tips apply to Visual Studio (not Code) on Windows too. If |