Application console
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Code
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using System;
namespace MonNS
{
class MaClasse
{
public static void Main(string[] args)
{
Console.WriteLine("");
}
}
}
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Read input
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ConsoleKeyInfo keyInfo = Console.ReadKey(true);
if (keyInfo.Key == ConsoleKey.Escape) { }
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Masquer la saisie d'un mot de passe
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public static string ReadPassword()
{
string password = "";
ConsoleKeyInfo info = Console.ReadKey(true);
while (info.Key != ConsoleKey.Enter)
{
if (info.Key != ConsoleKey.Backspace)
{
Console.Write("*");
password += info.KeyChar;
}
else if (info.Key == ConsoleKey.Backspace)
{
if (!string.IsNullOrEmpty(password))
{
// remove one character from the list of password characters
password = password.Substring(0, password.Length - 1);
// get the location of the cursor
int pos = Console.CursorLeft;
// move the cursor to the left by one character
Console.SetCursorPosition(pos - 1, Console.CursorTop);
// replace it with space
Console.Write(" ");
// move the cursor to the left by one character again
Console.SetCursorPosition(pos - 1, Console.CursorTop);
}
}
info = Console.ReadKey(true);
}
// add a new line because user pressed enter at the end of their password
Console.WriteLine();
return password;
}
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Masquer la fenêtre de la Console
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[DllImport("kernel32.dll")]
private static extern IntPtr GetConsoleWindow();
[DllImport("user32.dll")]
private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
private const int SW_HIDE = 0;
private const int SW_SHOW = 5;
var handle = GetConsoleWindow();
ShowWindow(handle, SW_HIDE);
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Couleurs
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Console.BackgroundColor = ConsoleColor.DarkRed;
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("...");
Console.ResetColor();
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Dependency injection
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dotnet add package Microsoft.Extensions.DependencyInjection |
| Program.cs |
static void Main(string[] args)
{
ServiceProvider serviceProvider = ConfigureServices(services);
IServiceScope scope = serviceProvider.CreateScope();
scope.ServiceProvider.GetRequiredService<ConsoleApplication>().Run();
serviceProvider.GetRequiredService<ConsoleApplication>().Run();
}
private static ServiceProvider ConfigureServices(IServiceCollection services) =>
new ServiceCollection()
.AddSingleton<IConfiguration>(
_ => new ConfigurationBuilder()
.AddJsonFile("appsettings.json", optional: true, reloadOnChange: false);
.AddUserSecrets<Program>()
.Build())
.AddSingleton<IMyService, MyService>()
.BuildServiceProvider();
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| ConsoleApplication.cs |
class ConsoleApplication
{
private readonly IConfiguration configuration;
private readonly IMyService myService;
public ConsoleApplication(IConfiguration configuration, IMyService myService)
{
this.configuration = configuration;
this.myService = myService;
}
public void Run()
{
var serviceProvider = ConfigureServices();
using var dbContext = serviceProvider.GetService<AppDbContext>();
myService.DoSomething();
}
private ServiceProvider ConfigureServices()
=> new ServiceCollection()
.AddDbContext<AppDbContext>(
x => x.UseMySql(BuildConnectionString(),
mySqlOptions => mySqlOptions.ServerVersion("10.5.8-mariadb")))
.BuildServiceProvider();
private string BuildConnectionString()
{
var connectionStringBuilder = new SqlConnectionStringBuilder("server=localhost;database=test;user=test;");
connectionStringBuilder.Password = configuration["DbPassword"];
return connectionStringBuilder.ConnectionString;
}
}
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Logging in .Net Core Console Apps
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dotnet add package Microsoft.Extensions.Logging dotnet add package Microsoft.Extensions.Logging.Console |
| Program.cs |
static void Main(string[] args)
{
var services = new ServiceCollection();
ConfigureServices(services);
// log
var serviceProvider = services.BuildServiceProvider();
var logger = serviceProvider.GetService<ILoggerFactory>()
.CreateLogger<Program>();
logger.LogDebug("Starting application");
}
private static void ConfigureServices(IServiceCollection services)
{
services.AddLogging(configure => configure.AddConsole());
}
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Configuration
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dotnet add package Microsoft.Extensions.Configuration.Json |
| Program.cs |
private static IConfiguration Configuration;
static void Main(string[] args)
{
var builder = new ConfigurationBuilder()
.SetBasePath(AppContext.BaseDirectory)
.AddJsonFile("appsettings.json");
Configuration = builder.Build();
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