React

Product Management Application using .NET Core and React JS with CRUD Operations

Introduction

In this article, we are going to create a product management web API with CRUD operations using .NET Core 6 and different forms with the help of React JS.

Prerequisites

  • Visual Studio 2022
  • VS Code
  • SQL Server
  • .NET Core SDK
  • Node JS

Product Management Application

Step 1. Create a new Product Management .NET Core Web API.

Step 2. Install the following NuGet packages that we used for database migrations and connectivity with SQL Server.

Packages

Step 3. Add the product class inside the entities folder.

namespace ProductManagementAPI.Entities
{
    public class Product
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public decimal Price { get; set; }
    }
}

Step 4. Create an AppDbContext class inside the data folder with a SQL Server connection and a DB set property.

using Microsoft.EntityFrameworkCore;
using ProductManagementAPI.Entities;

namespace ProductManagementAPI.Data
{
    public class AppDbContext : DbContext
    {
        public DbSet<Product> Products { get; set; }

        protected readonly IConfiguration Configuration;

        public AppDbContext(IConfiguration configuration)
        {
            Configuration = configuration;
        }
        protected override void OnConfiguring(DbContextOptionsBuilder options)
        {
            options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"));
            options.UseQueryTrackingBehavior(QueryTrackingBehavior.NoTracking);
        }
    }
}

Step 5. Add a product repository inside the repositories folder.

IProductRepository

using ProductManagementAPI.Entities;

namespace ProductManagementAPI.Repositories
{
    public interface IProductRepository
    {
        void AddProduct(Product product);
        void DeleteProduct(int id);
        List<Product> GetAllProducts();
        Product GetProductById(int id);
        void UpdateProduct(Product product);
    }
}

ProductRepository

using Microsoft.EntityFrameworkCore;
using ProductManagementAPI.Data;
using ProductManagementAPI.Entities;

namespace ProductManagementAPI.Repositories
{
    public class ProductRepository : IProductRepository
    {
        private readonly AppDbContext _context;

        public ProductRepository(AppDbContext context)
        {
            _context = context;
        }

        public List<Product> GetAllProducts()
        {
            return _context.Products.ToList();
        }

        public Product GetProductById(int id)
        {
            return _context.Products.FirstOrDefault(p => p.Id == id);
        }

        public void AddProduct(Product product)
        {
            if (product == null)
            {
                throw new ArgumentNullException(nameof(product));
            }

            _context.Products.Add(product);
            _context.SaveChanges();
        }

        public void UpdateProduct(Product product)
        {
            if (product == null)
            {
                throw new ArgumentNullException(nameof(product));
            }

            _context.Entry(product).State = EntityState.Modified;
            _context.SaveChanges();
        }

        public void DeleteProduct(int id)
        {
            var product = _context.Products.Find(id);
            if (product == null)
            {
                throw new ArgumentNullException(nameof(product));
            }

            _context.Products.Remove(product);
            _context.SaveChanges();
        }
    }
}

Step 6. Create a new product controller with different action methods that we used to perform different operations using our front-end application after invoking the same.

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using ProductManagementAPI.Entities;
using ProductManagementAPI.Repositories;

namespace ProductManagementAPI.Controllers
{
    [ApiController]
    [Route("api/[controller]")]
    public class ProductController : ControllerBase
    {
        private readonly IProductRepository _productRepository;

        public ProductController(IProductRepository productRepository)
        {
            _productRepository = productRepository;
        }

        [HttpGet]
        public IActionResult GetAllProducts()
        {
            var products = _productRepository.GetAllProducts();
            return Ok(products);
        }

        [HttpGet("{id}")]
        public IActionResult GetProductById(int id)
        {
            var product = _productRepository.GetProductById(id);
            if (product == null)
            {
                return NotFound();
            }
            return Ok(product);
        }

        [HttpPost]
        public IActionResult AddProduct([FromBody] Product product)
        {
            if (product == null)
            {
                return BadRequest();
            }

            _productRepository.AddProduct(product);
            return CreatedAtAction(nameof(GetProductById), new { id = product.Id }, product);
        }

        [HttpPut("{id}")]
        public IActionResult UpdateProduct(int id, [FromBody] Product product)
        {
            if (product == null || id != product.Id)
            {
                return BadRequest();
            }

            var existingProduct = _productRepository.GetProductById(id);
            if (existingProduct == null)
            {
                return NotFound();
            }

            _productRepository.UpdateProduct(product);
            return NoContent();
        }

        [HttpDelete("{id}")]
        public IActionResult DeleteProduct(int id)
        {
            var existingProduct = _productRepository.GetProductById(id);
            if (existingProduct == null)
            {
                return NotFound();
            }

            _productRepository.DeleteProduct(id);
            return NoContent();
        }
    }
}

Step 7. Open the app settings file and add the database connection string.

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "AllowedHosts": "*",
  "ConnectionStrings": {
    "DefaultConnection": "Data Source=DESKTOP-8RL8JOG;Initial Catalog=ReactNetCoreCrudDb;User Id=sa;Password=database@1;"
  }
}

Step 8. Register our services inside the service container and configure the middleware.

using ProductManagementAPI.Data;
using ProductManagementAPI.Repositories;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddScoped<IProductRepository, ProductRepository>();
builder.Services.AddDbContext<AppDbContext>();
builder.Services.AddCors(options => {
    options.AddPolicy("CORSPolicy", builder => builder.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader());
});


builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

var app = builder.Build();

// Configure the HTTP request pipeline.
app.UseCors("CORSPolicy");

if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();

Step 9. Execute the following entity framework database migration command to create a database and tables.

add-migration “v1”

update-database

Step 10. Finally, run the application and use Swagger UI to execute different API endpoints.

Product Manager API

Create a client application using React JS

Let’s create a client application using React JS and consume the above API endpoints within it.

Step 1. Create a new React JS application with the help of the following command:.

npx create-react-app react-netcore-crud-app

Step 2. Navigate to your project directory.

cd react-netcore-crud-app

Step 3. Install Axios to consume and hit backend API and bootstrap for designing purposes.

npm install axios

npm install bootstrap

Step 4. Add the following components and services:.

Product list component.

// src/components/ProductList/ProductList.js
import React, { useState, useEffect } from 'react';
import ProductListItem from './ProductListItem';
import productService from '../../services/productService';

const ProductList = () => {
    const [products, setProducts] = useState([]);

    useEffect(() => {
        fetchProducts();
    }, []);

    const fetchProducts = async () => {
        try {
            const productsData = await productService.getAllProducts();
            setProducts(productsData);
        } catch (error) {
            console.error('Error fetching products:', error);
        }
    };

    const handleDelete = async (id) => {
        try {
            await productService.deleteProduct(id);
            fetchProducts(); // Refresh product list
        } catch (error) {
            console.error('Error deleting product:', error);
        }
    };

    const handleEdit = () => {
        fetchProducts(); // Refresh product list after editing
    };

    return (
        <div className="container">
            <h2 className="my-4">Product List</h2>
            <ul className="list-group">
                {products.map(product => (
                    <ProductListItem key={product.id} product={product} onDelete={() => handleDelete(product.id)} onEdit={handleEdit} />
                ))}
            </ul>
        </div>
    );
};

export default ProductList;

Product list item component.

// src/components/ProductList/ProductListItem.js
import React, { useState } from 'react';
import productService from '../../services/productService';

const ProductListItem = ({ product, onDelete, onEdit }) => {
    const [isEditing, setIsEditing] = useState(false);
    const [editedName, setEditedName] = useState(product.name);
    const [editedPrice, setEditedPrice] = useState(product.price);

    const handleEdit = async () => {
        setIsEditing(true);
    };

    const handleSave = async () => {
        const editedProduct = { ...product, name: editedName, price: parseFloat(editedPrice) };
        try {
            await productService.updateProduct(product.id, editedProduct);
            setIsEditing(false);
            onEdit(); // Refresh product list
        } catch (error) {
            console.error('Error updating product:', error);
        }
    };

    const handleCancel = () => {
        setIsEditing(false);
        // Reset edited values
        setEditedName(product.name);
        setEditedPrice(product.price);
    };

    return (
        <li className="list-group-item">
            {isEditing ? (
                <div className="row">
                    <div className="col">
                        <input type="text" className="form-control" value={editedName} onChange={e => setEditedName(e.target.value)} required />
                    </div>
                    <div className="col">
                        <input type="number" className="form-control" value={editedPrice} onChange={e => setEditedPrice(e.target.value)} required />
                    </div>
                    <div className="col-auto">
                        <button className="btn btn-success me-2" onClick={handleSave}>Save</button>
                        <button className="btn btn-secondary" onClick={handleCancel}>Cancel</button>
                    </div>
                </div>
            ) : (
                <div className="d-flex justify-content-between align-items-center">
                    <span>{product.name} - ${product.price}</span>
                    <div>
                        <button className="btn btn-danger me-2" onClick={onDelete}>Delete</button>
                        <button className="btn btn-primary" onClick={handleEdit}>Edit</button>
                    </div>
                </div>
            )}
        </li>
    );
};

export default ProductListItem;

Product service.

// src/services/productService.js
import axios from 'axios';

const baseURL = 'https://localhost:7202/api/Product';

const productService = {
    getAllProducts: async () => {
        const response = await axios.get(baseURL);
        return response.data;
    },
    addProduct: async (product) => {
        const response = await axios.post(baseURL, product);
        return response.data;
    },
    deleteProduct: async (id) => {
        const response = await axios.delete(`${baseURL}/${id}`);
        return response.data;
    },
    updateProduct: async (id, product) => {
        const response = await axios.put(`${baseURL}/${id}`, product);
        return response.data;
    }
};

export default productService;

App component.

// src/App.js
import React, { useState } from 'react';
import ProductList from './components/ProductList/ProductList';
import ProductForm from './components/ProductForm/ProductForm';

function App() {
    const [refresh, setRefresh] = useState(false);

    const handleProductAdded = () => {
        setRefresh(!refresh); // Toggle refresh state to trigger re-render
    };

    return (
        <div>
            <ProductList key={refresh} />
            <ProductForm onProductAdded={handleProductAdded} />
        </div>
    );
}

export default App;

Step 5. Run the application using the following command and perform the different CRUD operations with the help of the same.

Run the application

Github: https://github.com/Jaydeep-007/React_NETCore_CRUD

Conclusion

In this article, we created a product management backend application using .NET Core and SQL Server with different API endpoints that are required to perform CRUD operations. Later on, I created the front-end application using React JS and consumed the back-end application inside the same with the help of Axios.

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