Demo - Azure App Configuration - Read Environment Specific Key-Value Pairs

Program.cs

using Microsoft.Extensions.Configuration.AzureAppConfiguration;

using TestApi.Configurations;

public static void Main(string[] args)
{
    var builder = WebApplication.CreateBuilder(args);
    Console.WriteLine($"Environment: {builder.Environment.EnvironmentName}");

    // Retrieve the connection string from environment variable
    string connectionString = Environment.GetEnvironmentVariable("ConnectionString")!;

    // Load configuration from Azure App Configuration
    builder.Configuration.AddAzureAppConfiguration(options =>
    {
        options
            .Connect(connectionString)
            // Load configuration values with no label
            .Select(KeyFilter.Any, LabelFilter.Null)
            // Override with any configuration values specific to current hosting env
            .Select(KeyFilter.Any, builder.Environment.EnvironmentName);
    });

    // Bind the configuration settings under "TestApi:" namespace
    builder.Services.Configure<AppSettings>(builder.Configuration.GetSection("TestApi"));

    // Other settings in Program.cs

    // Add services to the container.

    builder.Services.AddControllers();
    // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
    builder.Services.AddEndpointsApiExplorer();
    builder.Services.AddSwaggerGen();

    var app = builder.Build();

    // Configure the HTTP request pipeline.
    if (app.Environment.IsDevelopment())
    {
        app.UseSwagger();
        app.UseSwaggerUI();
    }

    app.UseHttpsRedirection();
    app.UseAuthorization();
    app.MapControllers();
    app.Run();
}