How to combine separate front end react js cra and back end asp net core a

Combining Front End React JS CRA and Back End ASP.NET Core

Combining a separate front end built with React JS Create React App (CRA) and a back end built with ASP.NET Core can be a powerful way to create web . React JS is a popular JavaScript library for building user interfaces, ASP.NET Core is a cross-platform framework for building web applications.

To combine these two technologies, we need to establish communication between the front end and the back end. This can be achieved through HTTP requests and APIs.

up the Back End

First, let's set up the back end using ASP.NET Core. Create a new ASP.NET Core project and configure it to serve as an API. This can be done by selecting the “API” template when creating the project.


// .cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllers();
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    // Configure middleware, logging, etc.
    app.UseRouting();
    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
    });
}

This sets up a basic ASP.NET Core API that can handle HTTP requests.

Creating API Endpoints

Next, let's create API endpoints that the front end can communicate with. These endpoints will handle the necessary CRUD (Create, Read, Update, Delete) operations.


// WeatherForecastController.cs

[ApiController]
[Route("api/[controller]")]
public class WeatherForecastController : ControllerBase
{
    [HttpGet]
    public IEnumerable Get()
    {
        // Retrieve data from a database or any other source
        // and return it as JSON
        return new List();
    }

    [HttpPost]
    public IActionResult Post([] WeatherForecast weatherForecast)
    {
        // Save the  data to a database or any other source
        return Ok();
    }

    [HttpPut("{id}")]
    public IActionResult Put(int id, [FromBody] WeatherForecast weatherForecast)
    {
        // Update the data with the specified ID in a database or any other source
        return Ok();
    }

    [HttpDelete("{id}")]
    public IActionResult Delete(int id)
    {
        // Delete the data with the specified ID from a database or any other source
        return Ok();
    }
}

This example creates a WeatherForecastController with API endpoints for retrieving, creating, , and deleting weather forecasts. These endpoints can be customized to fit your application's needs.

Setting up the Front End

Now, let's set up the front end using React JS CRA. Create a new React JS project using Create React App.


npx create-react-app my-app
cd my-app
npm start

This will create a new React JS project and start the development server.

Communicating with the Back End

To communicate with the back end API, we can use the built-in fetch API or popular like Axios. Let's use Axios for this example.

First, install Axios:


npm install axios

Next, let's make a GET request to retrieve weather forecasts from the back end API:


 React, { useEffect, useState } from 'react';
import axios from 'axios';

const WeatherForecast = () => {
    const [forecasts, setForecasts] = useState([]);

    useEffect(() => {
        axios.get('/api/weatherforecast')
            .then(response => {
                setForecasts(response.data);
            })
            .catch(error => {
                console.error(error);
            });
    }, []);

    return (
        
{forecasts.map(forecast => (

Date: {forecast.date}

Temperature: {forecast.temperatureC}°C

Summary: {forecast.summary}

))}
); }; export default WeatherForecast;

This example retrieves weather forecasts from the back end API and displays them in the component. The fetched data is stored in the “forecasts” state variable.

Conclusion

Combining a separate front end built with React JS CRA and a back end built with ASP.NET Core can be achieved by establishing communication through HTTP requests and APIs. By following the steps outlined in this article, you can create powerful and modern web applications that leverage the strengths of both technologies.

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