Create a blank Vue and ASP.NET Core application.

• Open Visual Studio .NET 2022 and create a new application of "Vue and ASP.NET Core" type:
  
  
• Configure the application to use .NET 8.0:
  

Server side: Add references to the Vintasoft assemblies to "VueApp1.Server" project.

Server side: Specify drawing engine, which should be used by VintaSoft Imaging .NET SDK for drawing of 2D graphics.

• Add reference to the Vintasoft.Imaging.Drawing.SkiaSharp.dll assembly.
• Add reference to the SkiaSharp nuget-package version 2.88.6.
• Open "Program.cs" file in "VueApp1.Server" project, add code line "Vintasoft.Imaging.Drawing.SkiaSharp.SkiaSharpDrawingFactory.SetAsDefault();" at the beginning of file - added code specifies that VintaSoft Imaging .NET SDK should use SkiaSharp library for drawing of 2D graphics.

• Add reference to the Vintasoft.Imaging.Gdi.dll assembly.
• Open "Program.cs" file in "VueApp1.Server" project, add code line "Vintasoft.Imaging.Drawing.Gdi.GdiGraphicsFactory.SetAsDefault();" at the beginning of file - added code specifies that VintaSoft Imaging .NET SDK should use System.Drawing library for drawing of 2D graphics.

Server side: Create web services, which allow to upload/download file, manage image collection, get information about images, get thumbnails, render image tiles, extract/search text and annotate document.

• Create web service that allows to upload/download file

  • 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 "MyVintasoftFileApiController" and press the "Add" button
    
  • Specify that MyVintasoftFileApiController class is derived from Vintasoft.Imaging.AspNetCore.ApiControllers.VintasoftFileApiController class
    
    Here are source codes of MyVintasoftFileApiController class:
    
    • C#

    namespace WebApplication1.Controllers
    {
        public class MyVintasoftFileApiController : Vintasoft.Imaging.AspNetCore.ApiControllers.VintasoftFileApiController
        {
    
            public MyVintasoftFileApiController(IWebHostEnvironment hostingEnvironment)
                : base(hostingEnvironment)
            {
            }
    
        }
    }
    
    

• Create web service that allows to work with DICOM images

  • 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 "MyVintasoftDicomApiController" and press the "Add" button
    
  • Specify that MyVintasoftDicomApiController class is derived from Vintasoft.Imaging.Dicom.AspNetCore.ApiControllers.VintasoftDicomApiController class
    
    Here are source codes of MyVintasoftDicomApiController class:
    
    • C#

    using Microsoft.AspNetCore.Hosting;
    using Vintasoft.Imaging.Dicom.AspNetCore.ApiControllers;
    
    namespace WebApplication1.Controllers
    {
        public class MyVintasoftDicomApiController : VintasoftDicomApiController
        {
    
            public MyVintasoftDicomApiController(IWebHostEnvironment hostingEnvironment)
                : base(hostingEnvironment)
            {
            }
    
        }
    }
    

Server side: Create CORS-policy that allows to access web services from client side.

• Open the "Program.cs" file in "VueApp1.Server" project and add code that:
  • Creates CORS-policy that allows to access web services from "localhost"
  • Enables CORS usage in "VueApp1.Server" project
  
  Here are source codes of "Program.cs" file after update:
  
  • C#

  Vintasoft.Imaging.Drawing.SkiaSharp.SkiaSharpDrawingFactory.SetAsDefault();
  
  var builder = WebApplication.CreateBuilder(args);
  
  // Add services to the container.
  
  builder.Services.AddControllers();
  
  builder.Services.AddCors(options =>
  {
      options.AddPolicy(name: "CorsPolicy1", policy =>
      {
          policy.SetIsOriginAllowed(origin => new Uri(origin).Host == "localhost").AllowAnyHeader().AllowAnyMethod();
      });
  });
  
  var app = builder.Build();
  
  app.UseDefaultFiles();
  app.UseStaticFiles();
  
  // Configure the HTTP request pipeline.
  
  app.UseHttpsRedirection();
  
  app.UseAuthorization();
  
  app.UseCors("CorsPolicy1");
  
  app.MapControllers();
  
  app.MapFallbackToFile("/index.html");
  
  app.Run();
  
  

Server side: Update launch URL in 'launchSettings.json' file.

• Open file "Properties\launchSettings.json" in "VueApp1.Server" and clear launch URL:
  

Server side: Copy the default test PDF document to a server side.

• Create folder "UploadedImageFiles\SessionID" in "VueApp1.Server" project and copy test DICOM file "<SdkInstallPath>\VintaSoft\Imaging .NET v12.5\Examples\ASP.NET Core\CSharp\AspNetCoreImagingDemo\wwwroot\UploadedImageFiles\LossyJpeg_Monochrome2_000.0000.dcm" to the folder. This file will be displayed in DICOM viewer.

Compile the project for restoring dependencies using 'npm'.

Delete files, which are not necessary in this tutorial.

• Delete files "WeatherForecast.cs" and "Controllers\WeatherForecastController.cs" in "VueApp1.Server" project - the WeatherForecast Web API controller is not necessary in this tutorial.
  
  
• Delete files "src\components\TheWelcome.vue", "src\components\WelcomeItem.vue" in "vueapp1.client" project - this Vue-component is not necessary in this tutorial.
  
  
• Open file "src\App.vue" in "vueapp1.client" project and delete code that uses the following Vue-components: HelloWorld, TheWelcome - these Vue-components are not necessary in this tutorial.
  Here are source codes of "App.vue" file after update:
  
  • JavaScript

  <script setup>
  </script>
  
  <template>
      <main>
      </main>
  </template>
  
  <style scoped>
  </style>
  
  

Client side: Add JavaScript files to the "vueapp1.client" project.

• Copy files Vintasoft.Shared.js, Vintasoft.Imaging.js and Vintasoft.Imaging.Dicom.js from "<InstallPath>\VintaSoft Imaging .NET v12.5\Bin\JavaScript\" folder to the root folder of "vueapp1.client" project.
  
  
• Copy files Vintasoft.Imaging.css and Vintasoft.Imaging.Dicom.css from "<InstallPath>\VintaSoft Imaging .NET v12.5\Bin\JavaScript\" folder to the root folder of "vueapp1.client" project.
  
  
• Specify, which "standard" dialogs (password dialog, print dialog, etc) should be used by web DICOM viewer
  • If web DICOM viewer should use ready-to-use "standard" Bootstrap dialogs:
    • Add "bootstrap" Node-module to the "package.json" file. Rebuild the project for refreshing Node-modules.
      Here are source codes of "package.json" file after update:
      
      • JSON

      {
        "name": "vueapp1.client",
        "version": "0.0.0",
        "private": true,
        "type": "module",
        "scripts": {
          "dev": "vite",
          "build": "vite build",
          "preview": "vite preview",
          "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs --fix --ignore-path .gitignore"
        },
        "dependencies": {
          "vue": "^3.4.21"
        },
        "devDependencies": {
          "@vitejs/plugin-vue": "^5.0.4",
          "eslint": "^8.57.0",
          "eslint-plugin-vue": "^9.23.0",
          "vite": "^5.2.8",
          "bootstrap": "5.3.3"
        }
      }
      
      

    • Copy Vintasoft.Imaging.Dialogs.Bootstrap.js and Vintasoft.Imaging.Dicom.Dialogs.Bootstrap.js files from "<InstallPath>\VintaSoft Imaging .NET v12.5\Bin\JavaScript\" folder to the root folder of "vueapp1.client" project.
    
    
  • If web DICOM viewer should use ready-to-use "standard" jQuery UI dialogs:
    • Add "jquery-ui-dist" Node-module to the "package.json" file. Rebuild the project for refreshing Node-modules.
    • Copy Vintasoft.Imaging.Dialogs.jQueryUI.js and Vintasoft.Imaging.Dicom.Dialogs.jQueryUI.js files from "<InstallPath>\VintaSoft Imaging .NET v12.5\Bin\JavaScript\" folder into "src\app\assets\" folder.
    
    
  • If web DICOM viewer should use custom "standard" dialogs, please read how to create custom "standard" dialogs here.
    
    
• Add references to Vintasoft JavaScript files to the header of "index.html" file in "vueapp1.client" project.
  Add links to the Vintasoft CSS-files to the "index.html" file in "vueapp1.client" project.
  Add link to the "bootstrap.css" file to the "index.html" file in "vueapp1.client" project.
  
  
  Here are source codes of "index.html" file after update:
  
  • HTML

  <!DOCTYPE html>
  <html lang="en">
  <head>
      <meta charset="UTF-8">
      <link rel="icon" href="/favicon.ico">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <title>Vite App</title>
  
      <link rel="stylesheet" type="text/css" href="node_modules/bootstrap/dist/css/bootstrap.css" />
      <link rel="stylesheet" type="text/css" href="Vintasoft.Imaging.css">
      <link rel="stylesheet" type="text/css" href="Vintasoft.Imaging.Dicom.css">
  
      <script src="Vintasoft.Shared.js" type="text/javascript"></script>
      <script src="Vintasoft.Imaging.js" type="text/javascript"></script>
      <script src="Vintasoft.Imaging.Dicom.js" type="text/javascript"></script>
      <script src="Vintasoft.Imaging.Dialogs.Bootstrap.js" type="text/javascript"></script>
      <script src="Vintasoft.Imaging.Dicom.Dialogs.Bootstrap.js" type="text/javascript"></script>
  </head>
  <body>
      <div id="app"></div>
      <script type="module" src="/src/main.js"></script>
  </body>
  </html>
  
  

Client side: Create Vue-component that allows to view DICOM images.

• In "vueapp1.client" project in folder "src\components\" create "DicomViewerDemo.vue" file that will contain source codes of Vue-component:
  • Select "Add => New Item..." context menu for folder "src\components\" in "vueapp1.client" project => "Add new item" dialog will appear
  • Install template "Vue TypeScript Template" from internet if template is not installed in Visual Studio
  • Select "Vue TypeScript Template" type for new item
  • Set "DicomViewerDemo.vue" as element name
  • Click the "Add" button => dialog will be closed and file "DicomViewerDemo.vue" will be added into folder "src\components\"
  
  In DicomViewerDemo.vue file add template that represents page header and div-element that displays DICOM viewer:
  
  
  In DicomViewerDemo.vue file change script type from TypeScript to JavaScript:
  
  
  In DicomViewerDemo.vue file add 'mounted' function (contains JavaScript code that initializes and creates web DICOM viewer):
  
  
  In DicomViewerDemo.vue file add CSS-style for Vue-component:
  
  
  Important: Visual Studio uses randomized network port for ASP.NET Core API and you need to update JavaScript code and change web services URL from "https://localhost:7008/" to URL in your application.
  
  Here is HTML/CSS/JavaScript code of DicomViewerDemo Vue-component:
  
  • JavaScript

  <template>
      <h1>VintaSoft DICOM Viewer (ASP.NET Core + Vue)</h1>
  
      <div id="dicomControlContainer" class="dicomControlContainer"></div>
  </template>
  
  <script lang="js">
      import { defineComponent } from 'vue';
  
      export default defineComponent({
          mounted() {
              // set the session identifier
              Vintasoft.Shared.WebImagingEnviromentJS.set_SessionId("SessionID");
  
              // specify web services, which should be used by Vintasoft Web DICOM Viewer
              Vintasoft.Shared.WebServiceJS.defaultFileService =
                  new Vintasoft.Shared.WebServiceControllerJS("https://localhost:7268/vintasoft/api/MyVintasoftFileApi");
              Vintasoft.Shared.WebServiceJS.defaultDicomService =
                  new Vintasoft.Shared.WebServiceControllerJS("https://localhost:7268/vintasoft/api/MyVintasoftDicomApi");
  
              // create DICOM control settings
              var dicomControlSettings = new Vintasoft.Imaging.Dicom.WebDicomControlSettingsJS("dicomControlContainer", "dicomControl");
              // create DICOM control
              var dicomControl = new Vintasoft.Imaging.Dicom.WebDicomControlJS(dicomControlSettings);
  
              // subscribe to the "warningOccured" event of DICOM control
              Vintasoft.Shared.subscribeToEvent(dicomControl, "warningOccured", function (event, eventArgs) { alert(eventArgs.message); });
  
              // add DICOM file "LossyJpeg_Monochrome2_000.0000.dcm" to the DICOM control
              dicomControl.addFiles(["LossyJpeg_Monochrome2_000.0000.dcm"]);
          }
      });
  </script>
  
  <style scoped>
      h1 {
          width: 1200px;
          text-align: center;
      }
  
      .dicomControlContainer {
          width: 1200px;
          height: 800px;
      }
  </style>
  
  

  
  
• Add created Vue-component to the Vue-application code - "src\App.vue" file.
  
  
  Here are source codes of "App.vue" file after update:
  
  • JavaScript

  <script setup>import DicomViewerDemo from './components/DicomViewerDemo.vue'</script>
  
  <template>
      <main>
          <DicomViewerDemo />
      </main>
  </template>
  
  <style scoped>
  </style>
  
  

Run the Vue and ASP.NET Core application and see the result.