ASP Module 1
Getting started with ASP.NET
Getting started with ASP.NETCreating a razor pages appTutorials
Getting started with ASP.NET
Getting started with ASP.NETCreating a razor pages appTutorials
  • Introduction to ASP.NET
    • A brief history of ASP.NET
    • Introduction to ASP.NET
  • Creating first app
    • Create empty app
    • Run the app
    • Program file
    • Add razor page
    • Add razor service
  • Exercise
    • Add two numbers
      • Improvisation
  • Others
    • Razor syntax overview
    • Razor practice
      • Show current date
      • Show hello many times
      • Show array contents
      • Show object properties
    • POIs
Powered by GitBook
On this page
  • Examine the program.cs file created
  • Enable hot reload
  • Edit the message
  1. Creating first app

Program file

PreviousRun the appNextAdd razor page

Last updated 2 years ago

Examine the program.cs file created 

var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();

app.MapGet("/", () => "Hello World!");

app.Run();

Just like any other.net app the program.cs file is the entry point to the application, right now it just listens to the base URL and maps requests to an anonymous function which returns hello world string.

The WebApplication.CreateBuilder is the API we use to build our web app and configure it the way we need it.

At this point it is impossible to serve HTML files or razor files since we don't have the necessary infrastructure for it. Even if we hardcode HTML content as string, it still renders as text only on browser!

Enable hot reload

Edit the message

Edit the message hello world with any string of your choice and save the file, you will see that the browser refreshes immediately without re running the application since we have enabled hot reload!