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ASP.NET Core Notes:

• Project file structure is the same as the file structure on object browser.
• If you change a file when asp.net core application is running on vs, it watches the file automatically.

In StartUp class:

• Configuration file can be constructed on constructor.

IConfiguration Configuration {get; set;}

// Default env variable can be seen from project file 
// => right click to properties => debug env variables in VS,
// in or Properties/launchSettings.json
public Startup(IHostingEnvironment env){
    var builder = new ConfigurationBuilder()
                    .SetBasePath(env.ContentRootPath)
                    .AddJsonFile("appSettings.json")
                    .AddEnvironmentVariables();
    Configuration = builder.Build();    
}

• ConfigureServices method is where DI issues are going to be handled.

• services.AddSingleton<IGreeter, Greeter>();

• services.AddSingleton(Instance); ==> Equals to .AsImplementedInterfaces() of Autofac.

• AddTransient ==> News when method or class needs

• AddScope ==> Http request scope

• Configure method is for configuring the HTTP request pipeline, and middlewares.

• app.UseTheMiddleWare

• ex: app.UseWelcomePage('/welcome');

• Middleware registration order is important.

• Middlewares are generally a package (Find them on NuGet)