ASP.NET Command

This package helps you add command features to your ASP.NET Core project, similar to Artisan in Laravel.

Installation and Usage

Install

dotnet add package RuangDeveloper.AspNetCore.Command

Create Command

In your project, create a folder called Commands (you can use any name you like).

In the folder you created, add your command class. For example:

using System;
using System.Threading.Tasks;
using RuangDeveloper.AspNetCore.Command;

public class HelloWorldCommand : ICommand
{
    public string Name => "hello";

    public async Task ExecuteAsync(string[] args)
    {
        // Simulate asynchronous work with Task.Delay
        await Task.Delay(1000);

        Console.WriteLine("Hello, world! (Async)");
    }

    // Synchronous execution of the command
    public void Execute(string[] args)
    {
        Console.WriteLine("Hello, world! (Sync)");
    }
}

Explanation:

• Name Property: The Name property returns the name of the command, which is hello in this example. This property allows you to identify the command when you’re executing it from a collection of commands.
• ExecuteAsync Method: The ExecuteAsync method performs the command asynchronously. Here, it’s simulating a delay using Task.Delay(1000) to mimic asynchronous operations, such as making a network call or accessing a database. After the delay, it prints “Hello, world! (Async)” to the console. If any arguments are passed, they are displayed as well.
• Execute Method: The Execute method performs the command synchronously. It simply prints “Hello, world! (Sync)” to the console.

Register the Command

After your command class is created, you need to register it in the service collection.

builder.Services.AddCommands(configure =>
{
    configure.AddCommand<HelloWorldCommand>();
});

Here, you use the AddCommands extension and then use the configuration to add the Command class.

Modify How Your Project Runs

Typically, your project will run using the .Run() method, but to be able to execute Commands, you need to change it to .RunWithCommands().

// Change this
// app.Run();
// to this
app.RunWithCommands(args);

Execute the Command

You can run the command using the following command:

dotnet run command --command hello

The --command option specifies which command to run, in this case, hello. This must match the name you set in your command class.

You can also add arguments using the --args option:

dotnet run command --command hello --args world

Then you can retrieve the arguments passed to your command.

...
public void Execute(string[] args)
{
    Console.WriteLine($"Hello, {args.FirstOrDefault() ?? "world"}! (Sync)");
}
...

(Optional) Modify Command Identifier

By default, you need to run the command with the following command:

dotnet run command --command hello

The keyword command is the identifier used to determine whether you want to execute a command or run the application.

If needed, you can change it to something like the following:

dotnet run cmd --command hello

To change it, you need to modify the configuration when registering the Command.

builder.Services.AddCommands(configure =>
{
    // Change command identifier
    configure.SetCommandCallIdentifier("cmd");
    // Add command
    configure.AddCommand<HelloWorldCommand>();
});

Built-in Commands

Command	Description	Usage
ls	List all registered commands	dotnet run command --command ls