CRUD Operations in ReactJS and ASP.NET Core Web API

In this article, we will be building an ReactJs application and will perform a CRUD Operation step by step from scratch with an example. We will be generating our ReactJs application and then modify it to have an Category management project where the end-user can perform CRUD operations, i.e., Create, List, Update, and Delete with the sample REST API exposed using Axios. We will also be using react-router-dom to have the routing enabled.

In this article I am going to use my API which I have explained in this section CRUD Operation in ASP.NET Core Web API with Entity Framework Core. So you can follow this link for the API.

To create a new ReactJS project, open the command prompt, and enter the following command:

npx create-react-app crudwithceactjs

Open the newly created project in Visual Studio Code and install Reactstrap and Bootstrap by using the following commands:

npm install –save bootstrap
npm install –save reactstrap react react-dom

After that you have to call the bootstrap in the index.js file.

import ‘bootstrap/dist/css/bootstrap.css’;

Now, go to the “src” folder and add a new folder “Category” and four new components:

  1. AddCategory.js
  2. CategoryList.js
  3. EditCategory.js
  4. Table.js

Install the Axios library by using the following command. Learn more about Axios library

npm install –save axios

Add routing: Use the following command to add routing in React.

npm install react-router-dom –save

Now are going to add the required code in all the files. We are using Axios for the api calling we can also use fetch for calling the api.

AddCategory.js

import React from 'react';
import axios from 'axios';
import '../Category/AddCategory.css';
import { Container, Col, Form, Row, FormGroup, Label, Input, Button } from 'reactstrap';
class AddCategory extends React.Component {
    constructor(props) {
        super(props)
        this.state = {
            Name: '',
            Price: '',
        }
    }
    AddCategory = () => {
        axios.post('https://localhost:44317/api/Category/AddCategory', { Name: this.state.Name, Price: this.state.Price })
            .then(json => {
                if (json) {
                    alert("Data Saved Successfully");
                    this.props.history.push('/CategoryList')
                }
                else {
                    alert('Data not Saved');
                    this.props.history.push('/CategoryList')
                }
            })
    }
    handleChange = (e) => {
        this.setState({ [e.target.name]: e.target.value });
    }
    render() {
        return (
            <Container className="App">
                <h4 className="PageHeading">Enter Category Informations</h4>
                <Form className="form">
                    <Col>
                        <FormGroup row>
                            <Label for="name" sm={2}>Name</Label>
                            <Col sm={10}>
                                <Input type="text" name="Name" onChange={this.handleChange} value={this.state.Name} placeholder="Enter Name" />
                            </Col>
                        </FormGroup>
                        <FormGroup row>
                            <Label for="address" sm={2}>Price</Label>
                            <Col sm={10}>
                                <Input type="text" name="Price" onChange={this.handleChange} value={this.state.Price} placeholder="Enter Price" />
                            </Col>
                        </FormGroup>
                    </Col>
                    <Col>
                        <FormGroup row>
                            <Col sm={5}>
                            </Col>
                            <Col sm={1}>
                                <button type="button" onClick={this.AddCategory} className="btn btn-success">Submit</button>
                            </Col>
                            <Col sm={1}>
                                <Button color="danger">Cancel</Button>{' '}
                            </Col>
                            <Col sm={5}>
                            </Col>
                        </FormGroup>
                    </Col>
                </Form>
            </Container>
        );
    }
}
export default AddCategory;

Add a new file  AddCategory.css file and add the following CSS classes. Import this file in the  AddCategory.js component.

.PageHeading    
{    
  margin-top: 10px;    
  margin-bottom: 10px;    
  color :black !important;    
}

EditCategory.js

import React from 'react';
import { Container, Col, Form, Row, FormGroup, Label, Input, Button } from 'reactstrap';
import axios from 'axios'
import '../Category/AddCategory.css'
class Edit extends React.Component {
    constructor(props) {
        super(props)
        this.onChangeName = this.onChangeName.bind(this);
        this.onChangePrice = this.onChangePrice.bind(this);
        this.onSubmit = this.onSubmit.bind(this);
        this.state = {
            Name: '',
            Price: '',
        }
    }
    componentDidMount() {
        axios.get('https://localhost:44317/api/Category/GetCategoryById?categoryId=' + this.props.match.params.id)
            .then(response => {
                this.setState({
                    Name: response.data.name,
                    Price: response.data.price
                });
            })
            .catch(function (error) {
                console.log(error);
            })
    }
    onChangeName(e) {
        this.setState({
            Name: e.target.value
        });
    }
    onChangePrice(e) {
        this.setState({
            Price: e.target.value
        });
    }
    onSubmit(e) {
        debugger;
        e.preventDefault();
        const obj = {
            Id: this.props.match.params.id,
            Name: this.state.Name,
            Price: this.state.Price
        };
        axios.post('https://localhost:44317/api/Category/UpdateCategory', obj)
            .then(res => { this.props.history.push('/CategoryList') });

    }
    render() {
        return (
            <Container className="App">
                <h4 className="PageHeading">Update Category Informations</h4>
                <Form className="form" onSubmit={this.onSubmit}>
                    <Col>
                        <FormGroup row>
                            <Label for="name" sm={2}>Name</Label>
                            <Col sm={10}>
                                <Input type="text" name="Name" value={this.state.Name} onChange={this.onChangeName}
                                    placeholder="Enter Name" />
                            </Col>
                        </FormGroup>
                        <FormGroup row>
                            <Label for="Password" sm={2}>Price</Label>
                            <Col sm={10}>
                                <Input type="text" name="Price" value={this.state.Price} onChange={this.onChangePrice} placeholder="Enter Price" />
                            </Col>
                        </FormGroup>
                    </Col>
                    <Col>
                        <FormGroup row>
                            <Col sm={5}>
                            </Col>
                            <Col sm={1}>
                                <Button type="submit" color="success">Submit</Button>{' '}
                            </Col>
                            <Col sm={1}>
                                <Button color="danger">Cancel</Button>{' '}
                            </Col>
                            <Col sm={5}>
                            </Col>
                        </FormGroup>
                    </Col>
                </Form>
            </Container>
        );
    }
}
export default Edit;

CategoryList.js

import React, { Component } from 'react';
import axios from 'axios';
import Table from './Table';
export default class Categorylist extends Component {
    constructor(props) {
        super(props);
        this.state = { business: [] };
    }
    componentDidMount() {
        axios.get('https://localhost:44317/api/Category/GetAllCategories')
            .then(response => {
                this.setState({ business: response.data });
            })
            .catch(function (error) {
                console.log(error);
            })
    }

    
    tabRow() {
        return this.state.business.map(function (object, i) {
            return <Table obj={object} key={i} />;
        });
    }
    render() {
        return (
            <div>
                <h4 align="center">Category List</h4>
                <table className="table table-striped" style={{ marginTop: 10 }}>
                    <thead>
                        <tr>
                            <th>Name</th>
                            <th>Price</th>
                            <th colSpan="4">Action</th>
                        </tr>
                    </thead>
                    <tbody>
                        {this.tabRow()}
                    </tbody>
                </table>
            </div>
        );
    }
}

Here we are using child Table Component for the table content.

Table.js

import React, { Component } from 'react';
import axios from 'axios';
import { Link } from 'react-router-dom';
class Table extends Component {
    constructor(props) {
        super(props);
    }
    DeleteCategory = () => {
        axios.post('https://localhost:44317/api/Category/DeleteCategory?categoryId=' + parseInt(this.props.obj.id))
            .then(json => {
                alert('Record deleted successfully!!');
            })
    }
    render() {
        return (
            <tr>
                <td>
                    {this.props.obj.name}
                </td>
                <td>
                    {this.props.obj.price}
                </td>
                <td>
                    <Link to={"/edit/" + this.props.obj.id} className="btn btn-success">Edit</Link>
                </td>
                <td>
                    <button type="button" onClick={this.DeleteCategory} className="btn btn-danger">Delete</button>
                </td>
            </tr>
        );
    }
}
export default Table;

We have written our routing code in the App.js.

import React from 'react';
import AddCategory from './Category/AddCategory';
import Categorylist from './Category/CategoryList';
import EditCategory from './Category/EditCategory';
import { BrowserRouter as Router, Switch, Route, Link } from 'react-router-dom';
import './App.css';
function App() {
  return (
    <Router>
      <div className="container">
        <nav className="navbar navbar-expand-lg navheader">
          <div className="collapse navbar-collapse" >
            <ul className="navbar-nav mr-auto">
              <li className="nav-item">
                <Link to={'/AddCategory'} className="nav-link">AddCategory</Link>
              </li>
              <li className="nav-item">
                <Link to={'/Categorylist'} className="nav-link">Category List</Link>
              </li>
            </ul>
          </div>
        </nav> <br />
        <Switch>
          <Route exact path='/AddCategory' component={AddCategory} />
          <Route path='/edit/:id' component={EditCategory} />
          <Route path='/Categorylist' component={Categorylist} />
        </Switch>
      </div>
    </Router>
  );
}
export default App;

After that run the project by using the command npm start.

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