Excel IO Element

Using the Excel IO element in SpreadJS with React, you can quickly render and display the Excel sheets on the webpages while also executing the import and export operations without any hassle.

1. Create a React Project

   Open the Command Prompt window and type the following commands:

   npm install -g create-react-app
   create-react-app quick-start
   cd quick-start
   npm start

   After you finish, the react project will be created at the specified location in the directory. For more information on how to create a React project, refer to https://reactjs.org/docs/create-a-new-react-app.html

2. Install SpreadJS React modules in project

   Install SpreadJS React modules in your project using the following command:

   npm install @grapecity/spread-sheets
   npm install @grapecity/spread-sheets-react

3. Import SpreadJS CSS into index.js file

   Import the SpreadJS CSS in your index.js file using the following code:

   import '@grapecity/spread-sheets/styles/gc.spread.sheets.excel2013white.css';

4. Install Excel IO React Module and FileSaver React Module in the ProjectInstall the Excel I/O and file-saver modules in your project using the following commands:

   npm install @grapecity/spread-excelio
   npm install file-saver --save

5. Use Excel IO in React Application

   Modify the App.js file as per your requirements. Changes will be reflected when the browser window is refreshed. As an example, you can use the sample code given below:

   
   

   This example shows how to use Excel IO elements in a React Application.

   import React from 'react';
   import './App.css';
   import GC from '@grapecity/spread-sheets';
   import { SpreadSheets, Worksheet } from '@grapecity/spread-sheets-react';
   
   // Import ExcelIO module
   import * as ExcelIO from "@grapecity/spread-excelio";
   
   // Import file-saver module
   import saveAs from 'file-saver';
   var SpreadJSKey = "xxx";
   GC.Spread.Sheets.LicenseKey = SpreadJSKey;
   
   // You need to license the ExcelIO module separately using the same license key
   ExcelIO.LicenseKey = SpreadJSKey;
   class App extends React.Component {
       constructor(props) {
           super(props);
           this.hostStyle =
               {
                   width: '1100px',
                   height: '800px'
               };
       }
   
   // Handling workbook initialized event
       workbookInit = (spread) => {
           this.setState({
               spread: spread
           });
       }
   // Import Excel
       importFile = () => {
           var excelFile = document.getElementById("fileDemo").files[0];
           // Get an instance of IO class
           let excelIO = new ExcelIO.IO();
           excelIO.open(excelFile, (json) => {
               this.state.spread.fromJSON(json);
           }, (e) => {
               console.log(e);
           });
       }
   // Export Excel
       exportFile = () => {
           // Get an instance of IO class
           let excelIO = new ExcelIO.IO();
           let fileName = document.getElementById("exportFileName").value;
           if (fileName.substr(-5, 5) !== '.xlsx') {
               fileName += '.xlsx';
           }
           var json = JSON.stringify(this.state.spread.toJSON());
           excelIO.save(json, (blob) => {
               saveAs(blob, fileName);
           }, (e) => {
               console.log(e);
           });
       }
       render() {
           return (
               <div>
                   <input type="file" name="files[]" id="fileDemo" accept=".xlsx" />
                   <input type="button" id="loadExcel" value="Import" onClick={this.importFile} />
                   <input type="button" id="saveExcel" value="Export" onClick={this.exportFile} />
                   <input type="text" id="exportFileName" placeholder="Export file name" value="export.xlsx" />
                   <SpreadSheets backColor={this.spreadBackColor} hostStyle={this.hostStyle} workbookInitialized={this.workbookInit}>
                       <Worksheet>
                       </Worksheet>
                   </SpreadSheets>
               </div>
           )
       }
   }
   export default App;