Create a blank ASP.NET Core Web application.

Server side: Add references to the Vintasoft assemblies to ASP.NET Core Web application.

Server side: Add Web API controller that allows to generate barcode image.

• Press the right mouse button on the "Controllers" folder and select the "Add => Controller..." menu from context menu
  
• Select Empty API controller template, set the controller name to the "MyVintasoftBarcodeApiController" and press the "Add" button
  
• Specify that MyVintasoftBarcodeApiController class is derived from Vintasoft.Barcode.AspNetCore.ApiControllers.VintasoftBarcodeApiController class
  
  Here are source codes of MyVintasoftBarcodeApiController class:
  
  • C#

  using Microsoft.AspNetCore.Hosting;
  using Microsoft.AspNetCore.Mvc;
  using Vintasoft.Barcode.AspNetCore.ApiControllers;
  
  namespace Project1.Controllers
  {
      public class MyVintasoftBarcodeApiController : VintasoftBarcodeApiController
      {
  
          public MyVintasoftBarcodeApiController(IWebHostEnvironment hostingEnvironment)
              : base(hostingEnvironment)
          {
          }
  
      }
  }
  

Compile the project for restoring dependencies using 'npm'.

Client side: Delete files, which are not necessary in this demo.

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
import { RouterModule } from '@angular/router';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent,
  ],
  imports: [
    BrowserModule.withServerTransition({ appId: 'ng-cli-universal' }),
    HttpClientModule,
    FormsModule,
    RouterModule.forRoot([
    ])
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Client side: Add JavaScript files and TypeScript modules to the ASP.NET Core Web application.

...
"scripts": [
  "src/app/assets/Vintasoft.Shared.js",
  "src/app/assets/Vintasoft.Barcode.js"
]
...

Client side: Create Angular component that generates and displays barcode image.

• Create folder "ClientApp\src\app\barcode-generator-demo\".
  
  Create "barcode-generator-demo.component.html" file that will contain HTML markup of Angular component:
  • Select "Add => New Item..." context menu for folder "ClientApp\src\app\barcode-generator-demo\" => "Add new item" dialog will appear
  • Select "HTML Page" type for new item
  • Set "barcode-generator-demo.component.html" as element name
  • Click the "Add" button => dialog will be closed and file "barcode-generator-demo.component.html" will be added into folder "ClientApp\src\app\barcode-generator-demo\"
  
  Add HTML markup (demo header and image element that will display generated barcode image) to the "barcode-generator-demo.component.html" file:
  
  • HTML

  <h1>Angular Barcode Generator Demo</h1>
  
  <img id="barcodeImage" src="" />
  
  

  
  
  Create "barcode-generator-demo.component.ts" file that will contain code of Angular component:
  • Select "Add => New Item..." context menu for folder "ClientApp\src\app\barcode-generator-demo\" => "Add new item" dialog will appear
  • Select "TypeScript File" type for new item
  • Set "barcode-generator-demo.component.ts" as element name
  • Click the "Add" button => dialog will be closed and file "barcode-generator-demo.component.ts" will be added into folder "ClientApp\src\app\barcode-generator-demo\"
  
  Add TypeScript code to the "barcode-generator-demo.component.cs" file:
  
  • TYPESCRIPT

  import { Component } from '@angular/core';
  
  @Component({
    selector: 'barcode-generator-demo',
    templateUrl: './barcode-generator-demo.component.html'
  })
  export class BarcodeGeneratorDemoComponent {
  
    ngOnInit() {
      // generate image of QR barcode with value "12345"
      this.generate2dBarcodeImage("QR", "12345");
    }
  
    /**
     * Generates 1D barcode image.
     * @param barcodeType Barcode type.
     * @param barcodeValue Barcode value.
    */
    public generate1dBarcodeImage(barcodeType: string, barcodeValue: string) {
      // set the session identifier
      Vintasoft.Shared.WebImagingEnviromentJS.set_SessionId("SessionID");
  
      // create web service that allows to generate barcode
      let barcodeService: Vintasoft.Shared.WebServiceJS = new Vintasoft.Shared.WebServiceControllerJS("vintasoft/api/MyVintasoftBarcodeApi");
  
      // create the barcode writer
      let barcodeWriter: Vintasoft.Barcode.WebBarcodeWriterJS = new Vintasoft.Barcode.WebBarcodeWriterJS(barcodeService);
  
      // create the barcode writer settings for generating 2D barcode
      let barcodeWriterSettings: Vintasoft.Barcode.Web1DBarcodeWriterSettingsJS = new Vintasoft.Barcode.Web1DBarcodeWriterSettingsJS();
      // specify that barcode writer must generate QR barcode image
      barcodeWriterSettings.set_BarcodeType(new Vintasoft.Barcode.WebBarcodeTypeEnumJS(barcodeType));
      // specify the QR barcode value
      barcodeWriterSettings.set_Value(barcodeValue);
  
      // specify settings for barcode writer
      barcodeWriter.set_Settings(barcodeWriterSettings);
  
      // send an asynchronous request for getting barcode image as Base64 string
      barcodeWriter.getBarcodeAsBase64Image(this.__writeBarcode_success, this.__writeBarcode_failed);
    }
  
    /**
     * Generates 2D barcode image.
     * @param barcodeType Barcode type.
     * @param barcodeValue Barcode value.
    */
    public generate2dBarcodeImage(barcodeType: string, barcodeValue: string) {
      // set the session identifier
      Vintasoft.Shared.WebImagingEnviromentJS.set_SessionId("SessionID");
  
      // create web service that allows to generate barcode
      let barcodeService: Vintasoft.Shared.WebServiceJS = new Vintasoft.Shared.WebServiceControllerJS("vintasoft/api/MyVintasoftBarcodeApi");
  
      // create the barcode writer
      let barcodeWriter: Vintasoft.Barcode.WebBarcodeWriterJS = new Vintasoft.Barcode.WebBarcodeWriterJS(barcodeService);
  
      // create the barcode writer settings for generating 2D barcode
      let barcodeWriterSettings: Vintasoft.Barcode.Web2DBarcodeWriterSettingsJS = new Vintasoft.Barcode.Web2DBarcodeWriterSettingsJS();
      // specify that barcode writer must generate QR barcode image
      barcodeWriterSettings.set_BarcodeType(new Vintasoft.Barcode.WebBarcodeTypeEnumJS(barcodeType));
      // specify the QR barcode value
      barcodeWriterSettings.set_Value(barcodeValue);
  
      // specify settings for barcode writer
      barcodeWriter.set_Settings(barcodeWriterSettings);
  
      // send an asynchronous request for getting barcode image as Base64 string
      barcodeWriter.getBarcodeAsBase64Image(this.__writeBarcode_success, this.__writeBarcode_failed);
    }
  
    /**
     * Barcode is generated successfully.
     * @param data Object that stores response from barcode service.
     */
    private __writeBarcode_success(data: Vintasoft.Barcode.WebBarcodeWriteResponseParamsJS) {
      if (data.success) {
        let barcodeImage: string = data.barcodeImage;
        let barcodeImageElement: HTMLImageElement = document.getElementById("barcodeImage") as HTMLImageElement;
        barcodeImageElement.src = barcodeImage;
      }
      else {
        alert(data.errorMessage);
      }
    }
  
    /**
     * Barcode generation is failed.
     * @param data Object with information about error.
     */
    private __writeBarcode_failed(data) {
      // show information about error
      alert(data.errorMessage);
    }
  
  }
  
  

  
  
  
• Add created Angular component to the Angular application module - "ClientApp\src\app\app.module.ts" file.
  
  
  Here are source codes of "app.module.ts" file after update:
  
  • TYPESCRIPT

  import { BrowserModule } from '@angular/platform-browser';
  import { NgModule } from '@angular/core';
  import { FormsModule } from '@angular/forms';
  import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
  import { RouterModule } from '@angular/router';
  
  import { AppComponent } from './app.component';
  import { BarcodeGeneratorDemoComponent } from './barcode-generator-demo/barcode-generator-demo.component';
  
  @NgModule({
    declarations: [
      AppComponent,
      BarcodeGeneratorDemoComponent
    ],
    imports: [
      BrowserModule.withServerTransition({ appId: 'ng-cli-universal' }),
      HttpClientModule,
      FormsModule,
      RouterModule.forRoot([
        { path: '', component: BarcodeGeneratorDemoComponent, pathMatch: 'full' },
      ])
    ],
    providers: [],
    bootstrap: [AppComponent]
  })
  export class AppModule { }
  
  

Run the ASP.NET Core Web application with Angular and see the result.