We can configure middleware in the Configure method of the Startup class using IApplicationBuilder instance.Run() is an extension method on IApplicationBuilder instance which adds a terminal middleware to the application's request pipeline.The Run method is an extension method on IApplicationBuilder and accepts a parameter of RequestDelegate.signature of the Run methodpublic static void Run(this IApplicationBuilder app, RequestDelegate handler)signature of RequestDelegatepublic delegate Task RequestDelegate(HttpContext context);Examplepublic class Startup{    public Startup(){    }    public void Configure(IApplicationBuilder app, IHostingEnvironment env,    ILoggerFactory loggerFactory){       //configure middleware using IApplicationBuilder here..       app.Run(async (context) =>{          await context.Response.WriteAsync("Hello ... Read More

Middleware are software components that are assembled into an application pipeline to handle requests and responses.Each component chooses whether to pass the request on to the next component in the pipeline, and can perform certain actions before and after the next component is invoked in the pipeline.Map extensions are used as convention for branching the pipeline.The Map extension method is used to match request delegates based on a request’s path. Map simply accepts a path and a function that configures a separate middleware pipeline.In the following example, any request with the base path of /maptest will be handled by the ... Read More

The configure method is present inside startup class of ASP.NET Core applicationThe Configure method is a place where you can configure application request pipeline for your application using IApplicationBuilder instance that is provided by the built-in IoC containerThe Configure method by default has these three parameters IApplicationBuilder, IWebHostEnvironment and ILoggerFactory .At run time, the ConfigureServices method is called before the Configure method. This is to register custom service with the IoC container which can be used in Configure method.IWebHostEnvironment :Provides information about the web hosting environment an application is running in.IApplicationBuilder:Defines a class that provides the mechanisms to configure an ... Read More

An external application can be run from a C# application using Process. A process is a program that is running on your computer. This can be anything from a small background task, such as a spell-checker or system events handler to a full-blown application like Notepad etc.Each process provides the resources needed to execute a program. Each process is started with a single thread, known as the primary thread. A process can have multiple threads in addition to the primary thread. Processes are heavily dependent on system resources available while threads require minimal amounts of resource, so a process is ... Read More

A media type, also called a MIME type, identifies the format of a piece of data. In HTTP, media types describe the format of the message body. A media type consists of two strings, a type and a subtype. For example −text/htmlimage/pngapplication/jsonWhen an HTTP message contains an entity-body, the Content-Type header specifies the format of the message body. This tells the receiver how to parse the contents of the message body.When the client sends a request message, it can include an Accept header. The Accept header tells the server which media type(s) the client wants from the server.Accept: text/html, application/xhtml+xml, ... Read More

Reflection is when managed code can read its own metadata to find assemblies. Essentially, it allows code to inspect other code within the same system. With reflection in C#, we can dynamically create an instance of a type and bind that type to an existing object. Moreover, we can get the type from an existing object and access its properties. When we use attributes in our code, reflection gives us access as it provides objects of Type that describe modules, assemblies, and types.Let us say we have a property of type double and in the runtime we actually have the ... Read More

A static constructor is used to initialize any static data, or to perform a particular action that needs to be performed once only. It is called automatically before the first instance is created or any static members are referenced.Static constructors are useful when creating wrapper classes for unmanaged code, when the constructor can call the LoadLibrary method. Static constructors are also a convenient place to enforce run-time checks on the type parameter that cannot be checked at compile time via constraints.Static constructors have the following properties −A static constructor does not take access modifiers or have parameters.A class or struct ... Read More

Every machine on a network has a unique identifier. Just as you would address a letter to send in the mail, computers use the unique identifier to send data to specific computers on a network. Most networks today, including all computers on the internet, use the TCP/IP protocol as the standard for how to communicate on the network. In the TCP/IP protocol, the unique identifier for a computer is called its IP address.Using HttpRequest.UserHostAddress propertyExampleusing System.Web.Mvc; namespace DemoMvcApplication.Controllers{    public class HomeController : Controller{       public string Index(){          string ipAddress = Request.UserHostAddress;     ... Read More

|| is called logical OR operator and | is called bitwise logical OR but the basic difference between them is in the way they are executed. The syntax for || and | the same as in the following −bool_exp1 || bool_exp2bool_exp1 | bool_exp2Now the syntax of 1 and 2 looks similar to each other but the way they will execute is entirely different.In the first statement, first bool_exp1 will be executed and then the result of this expression decides the execution of the other statement.If it is true, then the OR will be true so it makes no sense to execute ... Read More

Step 1 −Create a new windows service application.Step 2 −For running a Windows Service, you need to install the Installer, which registers it with the Service Control Manager. Right click on the Service1.cs[Design] and Add Installer.Step 3 −Right click on the ProjectInstaller.cs [Design] and select the view code.using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Configuration.Install; using System.Linq; using System.Threading.Tasks; namespace DemoWindowsService{    [RunInstaller(true)]    public partial class ProjectInstaller : System.Configuration.Install.Installer{       public ProjectInstaller(){          InitializeComponent();       }    } }Press F12 and go to the implementation of the InitializeComponent class. Add ... Read More