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class Program |
{ |
static void Main(string[] args) |
{ |
Console.WriteLine("Hello World!"); |
} |
} |
} |
static void Main is the entry point method of a C# program, and by |
convention it's placed in a class (a type of code structure or module) |
called Program . The using statement at the top imports the built-in |
System classes from .NET and makes them available to the code in your |
class. |
From inside the project directory, use dotnet run to run the program. |
You'll see the output written to the console after the code compiles: |
dotnet run |
13 |
Hello World in C# |
Hello World! |
That's all it takes to scaffold and run a .NET program! Next, you'll do the |
same thing for an ASP.NET Core application. |
14 |
Create an ASP.NET Core project |
Create an ASP.NET Core project |
If you're still in the directory you created for the Hello World sample, |
move back up to your Documents or home directory: |
cd .. |
Next, create a new directory to store your entire project, and move into |
it: |
mkdir AspNetCoreTodo |
cd AspNetCoreTodo |
Next, create a new project with dotnet new , this time with some extra |
options: |
dotnet new mvc --auth Individual -o AspNetCoreTodo |
cd AspNetCoreTodo |
This creates a new project from the mvc template, and adds some |
additional authentication and security bits to the project. (I'll cover |
security in the Security and identity chapter.) |
You might be wondering why you have a directory called |
AspNetCoreTodo inside another directory called AspNetCoreTodo . |
The top-level or "root" directory can contain one or more project |
directories. The root directory is sometimes called a solution |
directory. Later, you'll add more project directories side-by-side |
with the AspNetCoreTodo project directory, all within a single root |
solution directory. |
15 |
Create an ASP.NET Core project |
You'll see quite a few files show up in the new project directory. Once |
you cd into the new directory, all you have to do is run the project: |
dotnet run |