Document Viewer Integration in React Application

• Jul 28, 2023
• 2 minutes to read

Note

The complete sample project How to use the Document Viewer in JavaScript with React Framework is available in the DevExpress Examples repository.

The server-side model stores a report and provides it to the HTML5 Document Viewer integrated in the client React JavaScript application.

The project consists of the server and client parts.

Server (Back-End) Application

Refer to the following topics to create a back-end application:

• Document Viewer Server-Side Application (ASP.NET MVC)
• Document Viewer Server-Side Application (ASP.NET Core)

Client (Front-End) Application

1. Create a folder (JS in our example) to store application files. Launch the command prompt to perform the following steps to create and configure the client part.

2. Create a new React application in the react-document-viewer folder:

   npx create-react-app react-document-viewer
   

3. Switch to the root application folder:

   cd react-document-viewer
   

4. Install DevExpress packages:

   npm install devextreme devexpress-reporting @devexpress/analytics-core
   

5. Open the App.js file in the src folder (JS\react-document-viewer\src) and substitute its content with the following code:

   App.js

   import React from 'react';
   import ko from 'knockout';
   import 'devexpress-reporting/dx-webdocumentviewer';
   import './App.css';
   
   class ReportViewer extends React.Component {
   constructor(props) {
       super(props);
       this.reportUrl = ko.observable("TestReport");
       this.requestOptions = {
       host: "https://localhost:54114/",
       // Use this line for the ASP.NET MVC backend.
       //invokeAction: "/WebDocumentViewer/Invoke"
       // Use this line for the ASP.NET Core backend
       invokeAction: "DXXRDV"
       };
   }
   render() {
       return (<div ref="viewer" data-bind="dxReportViewer: $data"></div>);
   }
   componentDidMount() {
       ko.applyBindings({
       reportUrl: this.reportUrl,
       requestOptions: this.requestOptions
       }, this.refs.viewer);
   }
   componentWillUnmount() {
       ko.cleanNode(this.refs.viewer);
   }
   };
   
   function App() {
   return (<div style={{ width: "100%", height: "1000px" }}>
       <ReportViewer />
   </div>);
   }
   
   export default App;
   

   The code declares the ReportViewer component and returns it with the App function.

   Important

   You can modify the App.js content to specify the correct server-side port (54114 in this example) and report name (Products in this example).

6. Open the App.css file in the src folder (JS\react-report-designer\src) and append the following style sheet references:

   App.css

   /* ... */
   @import url("../node_modules/jquery-ui/themes/base/all.css");
   @import url("../node_modules/devextreme/dist/css/dx.common.css");
   @import url("../node_modules/devextreme/dist/css/dx.light.css");
   @import url("../node_modules/@devexpress/analytics-core/dist/css/dx-analytics.common.css");
   @import url("../node_modules/@devexpress/analytics-core/dist/css/dx-analytics.light.css");
   @import url("../node_modules/devexpress-reporting/dist/css/dx-webdocumentviewer.css");
   

7. Run the server (back-end) application.

8. Navigate to the client application’s root folder (JS\react-document-viewer), open the command prompt, and run the client application:

   npm start
   

   The client application opens the browser at http://localhost:3000/. It displays the Document Viewer with the TestReport report.