dotnet-reactjs template - explain code sample RSS

• • Reply
  br14n

  None

  0 Points

  1 Post

  dotnet-reactjs template - explain code sample

  Feb 08, 2021 03:05 PM|br14n|LINK

  Hello, I just got started with using the dotnet-reactjs template on VS 2019. Can someone explain what these specific line of code do in the controller?

  I probably won't need to use any of this boilerplate code, but still would be helpful if I'm writing this on my own.

  Thanks!

  private readonly ILogger<WeatherForecastController> _logger;

  public WeatherForecastController(ILogger<WeatherForecastController> logger)
          {
              _logger = logger;
          }

          [HttpGet]
          public IEnumerable<WeatherForecast> Get()
          { ... }

  using Microsoft.AspNetCore.Mvc;
  using Microsoft.Extensions.Logging;
  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Threading.Tasks;
  
  namespace WebApplication1.Controllers
  {
      [ApiController]
      [Route("[controller]")]
      public class WeatherForecastController : ControllerBase
      {
          private static readonly string[] Summaries = new[]
          {
              "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
          };
  
          private readonly ILogger<WeatherForecastController> _logger;
  
          public WeatherForecastController(ILogger<WeatherForecastController> logger)
          {
              _logger = logger;
          }
  
          [HttpGet]
          public IEnumerable<WeatherForecast> Get()
          {
              var rng = new Random();
              return Enumerable.Range(1, 5).Select(index => new WeatherForecast
              {
                  Date = DateTime.Now.AddDays(index),
                  TemperatureC = rng.Next(-20, 55),
                  Summary = Summaries[rng.Next(Summaries.Length)]
              })
              .ToArray();
          }
      }
  }
  

• • Reply
  mgebhard

  All-Star

  53711 Points

  24031 Posts

  Re: dotnet-reactjs template - explain code sample

  Feb 08, 2021 03:07 PM|mgebhard|LINK

  The code is a Web API controller.  You can learn about Web API from the official documentation. 

  https://docs.microsoft.com/en-us/aspnet/core/tutorials/first-web-api?view=aspnetcore-5.0&tabs=visual-studio

• • Reply
  SurferOnWww

  Member

  390 Points

  280 Posts

  Re: dotnet-reactjs template - explain code sample

  Feb 09, 2021 12:45 AM|SurferOnWww|LINK

  br14n

  Hello, I just got started with using the dotnet-reactjs template on VS 2019. Can someone explain what these specific line of code do in the controller?

  Did you run your application and see the result displayed on your browser? You probably saw the followings:

  Welcome to your new single-page application, built with:

  • ASP.NET Core and C# for cross-platform server-side code
  • React for client-side code
  • Bootstrap for layout and styling

  The first one (i.e., ASP.NET Core and C# for cross-platform server-side code) is what you say "these specific line of code". It is a controller and action method of ASP.NET Core Web API.

  Click the "Fetch data" link shown at upper right side on the browser. The result obtained from the ASP.NET Core Web API will be shown on the browser.