There are several different pieces of information relating to processors that we can getNumber of physical processorsNumber of coresNumber of logical processorsThese can all be different; in the case of a machine with 2 dual-core hyper-threadingenabled processors, there are 2 physical processors, 4 cores, and 8 logical processors.The number of logical processors is available through the Environment class, but the other information is only available through WMI (and you may have to install some hotfixes or service packs to get it on some systems) −Add a reference in your project to System.Management.dll In .NET Core, this is available (for Windows ... Read More

An enum is a special "class" that represents a group of constants (unchangeable/readonly variables).To create an enum, use the enum keyword (instead of class or interface), and separate the enum items with a comma −By default, the first item of an enum has the value 0. The second has the value 1, and so on.To get the integer value from an item, you must explicitly convert the item to an intYou can also assign your own enum values, and the next items will update the number accordingly −Enums are often used in switch statements to check for corresponding values −Exampleclass ... Read More

The List is a collection of strongly typed objects that can be accessed by index and having methods for sorting, searching, and modifying list. It is the generic version of the ArrayList that comes under System.Collection.Generic namespace.List equivalent of the ArrayList, which implements IList.It comes under System.Collection.Generic namespace.Listcan contain elements of the specified type. It provides compile-time type checking and doesn't perform boxing-unboxing because it is generic.Elements can be added using the Add(), AddRange() methods or collection-initializer syntax.Elements can be accessed by passing an index e.g. myList[0]. Indexes start from zero. List performs faster and less error-prone than the ArrayList.A ... Read More

There are three ways by which dependencies can be registered in Startup.cs. i.e. AddSingleton, AddScoped and AddTransient.Add SingletonWhen we register a type as singleton, only one instance is available throughout the application and for every request.It is similar to having a static object.The instance is created for the first request and the same is available throughout the application and for each subsequent requests.public void ConfigureServices(IServiceCollection services){    services.AddSingleton() }Add ScopedWhen we register a type as Scoped, one instance is available throughout the application per request. When a new request comes in, the new instance is created. Add scoped specifies that ... Read More

Create a new folder named CustomExceptionMiddleware and a class ExceptionMiddleware.cs inside it.The first thing we need to do is to register our IloggerManager service and RequestDelegate through the dependency injection.The _next parameter of RequestDeleagate type is a function delegate that can process our HTTP requests.After the registration process, we need to create the InvokeAsync() method. RequestDelegate can’t process requests without it.The _next delegate should process the request and the Get action from our controller should generate a successful response. But if a request is unsuccessful (and it is, because we are forcing exception), our middleware will trigger the catch block ... Read More

It is known that Microsoft.AspNetCore package is one of the packages added to many ASP.NET Core templates.The Microsoft.AspNetCore package is repeatedly included as one of the usual project dependencies when opening a new ASP.NET Core project. It delivers many of the crucial packages to position up a basic ASP.NET Core application.Though, this package does not contain any actual dlls or code itself, it merely contains a series of dependencies on additional packages. By adding this package to your project, you bring in all the relevant packages along with their dlls on which it depends and it is called a metapackage.Specifically, ... Read More

ASP.NET Core web application is actually a console project which starts executing from the entry point public static void Main() in Program class where we can create a host for the web application.public class Program{    public static void Main(string[] args){       BuildWebHost(args).Run();    }    public static IWebHost BuildWebHost(string[] args) =>    WebHost.CreateDefaultBuilder(args)    .UseStartup()    .Build(); }The WebHost is a static class which can be used for creating an instance of IWebHost and IWebHostBuilder with pre-configured defaults.The CreateDefaultBuilder() method creates a new instance of WebHostBuilder with pre-configured defaults. Internally, it configures Kestrel, IISIntegration and other configurations. ... Read More

All ASP.NET Core applications require a WebHost object that essentially serves as the application and web server. WebHostBuilder is used to configure and create the WebHost. You will normally see UseKestrel() and UseIISIntegration() in the WebHostBuilder setup code.What do these do?UseKestrel() − This registers the IServer interface for Kestrel as the server that will be used to host your application.In the future, there could be other options, including WebListener which will be Windows only.UseIISIntegration() − This tells ASP.NET that IIS will be working as a reverse proxy in front of Kestrel.This then specifies some settings around which port Kestrel should ... Read More

IWebHostEnvironment Provides information about the web hosting environment an application is running in.belongs to namespace Microsoft.AspNetCore.HostingThe IWebHostEnvironment interface need to be injected as dependency in the Controller and then later used throughout the Controller.The IWebHostEnvironment interface have two properties.WebRootPath − Path of the www folder(Gets or sets the absolute path to the directory that contains the web-servable application content files)ContentRootPath − Path of the root folder which contains all the Application files(Gets or sets an IFileProvider pointing at WebRootPath.)UsageWe need to import namesaceusing Microsoft.AspNetCore.Hosting;In the below example, the IWebHostEnvironment is injected in the Controller and assigned to the private property ... Read More

Kestrel is a cross-platform web server for ASP.NET Core. It is supported on all platforms and versions that .NET Core supports.It is included by default as internal server in ASP.NET Core. Kestrel can be used, by itself as an edge server i.e Internet-facing web server that can directly process the incoming HTTP requests from the client. In Kestrel, the process used to host the app is dotnet.exe.Kestrel is not used with InProcess hosting model.With Out of Process Hosting model, Kestrel can be used in one of the following 2 ways.Kestrel can be used as the internet facing web serverKestrel can ... Read More