Create a blank "ASP.NET Core Web App (Model-View-Controller)" application.

Server side: Add references to the Vintasoft nuget-packages to the ASP.NET Core application.

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" nuget-package. Reference to the "SkiaSharp" nuget-package version 3.119.0 will be added automatically.
  
• Open "Program.cs" file, 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" nuget-package.
  
• Open "Program.cs" file, 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 and view DICOM images.

• 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#

    using Microsoft.AspNetCore.Hosting;
    
    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
    {
        /// <summary>
        /// A Web API controller that handles HTTP requests from clients and
        /// allows to work with DICOM images.
        /// </summary>
        public class MyVintasoftDicomApiController : VintasoftDicomApiController
        {
    
            /// <summary>
            /// Initializes a new instance of the <see cref="MyVintasoftDicomApiController"/> class.
            /// </summary>
            public MyVintasoftDicomApiController(IWebHostEnvironment hostingEnvironment)
                : base(hostingEnvironment)
            {
            }
    
        }
    }
    

Client side: Add JavaScript libraries to the project.

• Add the "wwwroot\lib\Vintasoft\" folder to ASP.NET Core application if folder does not exist.
  
  
• Copy Vintasoft.Shared.js, Vintasoft.Imaging.js, Vintasoft.Imaging.css, Vintasoft.Imaging.Dicom.js, Vintasoft.Imaging.Dicom.css files from "<InstallPath>\VintaSoft Imaging .NET 15.0\Bin\JavaScript\" folder into "wwwroot\lib\Vintasoft\" folder.
• Specify, which "standard" dialogs (show DICOM metadata, etc) should be used by web DICOM viewer
  • If web DICOM viewer should use ready-to-use "standard" Bootstrap dialogs:
    • Add Bootstrap and jQuery libraries to the project.
    • Copy Vintasoft.Imaging.Dialogs.Bootstrap.js and Vintasoft.Imaging.Dicom.Dialogs.Bootstrap.js files from "<InstallPath>\VintaSoft Imaging .NET 15.0\Bin\JavaScript\" folder into "wwwroot\lib\Vintasoft\" folder.
  • If web DICOM viewer should use ready-to-use "standard" jQuery UI dialogs:
    • Add jQuery and jQuery UI libraries to the project.
    • Copy Vintasoft.Imaging.Dialogs.jQueryUI.js and Vintasoft.Imaging.Dicom.Dialogs.jQueryUI.js files from "<InstallPath>\VintaSoft Imaging .NET 15.0\Bin\JavaScript\" folder into "wwwroot\lib\Vintasoft\" folder.
  • If web DICOM viewer should use custom "standard" dialogs, please read how to create custom "standard" dialogs here.

Client side: Add JavaScript code that allows to display DICOM images.

• Create folder "wwwroot\UploadedImageFiles\SessionID" and copy test DICOM file "<SdkInstallPath>\VintaSoft\Imaging .NET 15.0\Examples\ASP.NET Core\CSharp\AspNetCoreImagingDemo\wwwroot\UploadedImageFiles\LossyJpeg_Monochrome2_000.0000.dcm" to the folder. This file will be displayed in DICOM viewer.
  
  
• Open file "Views\Home\Index.cshtml".
  
  
  
  Add references to used JavaScript libraries:
  • If Bootstrap dialogs are used, add references to the Bootstrap files and Vintasoft JavaScript files.
    Here is HTML code that adds references to the Bootstrap and Vintasoft JavaScript files:
    
    • HTML

    <link rel="stylesheet" type="text/css" href="~/lib/bootstrap/dist/css/bootstrap.css">
    <link rel="stylesheet" type="text/css" href="~/lib/Vintasoft/Vintasoft.Imaging.css">
    <link rel="stylesheet" type="text/css" href="~/lib/Vintasoft/Vintasoft.Imaging.Dicom.css">
    
    <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.js" type="text/javascript"></script>
    
    <script src="~/lib/Vintasoft/Vintasoft.Shared.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.Dialogs.Bootstrap.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.Dicom.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.Dicom.Dialogs.Bootstrap.js" type="text/javascript"></script>
    
    

    
    
  • If jQuery UI dialogs are used, add references to the jQuery files and Vintasoft JavaScript files.
    Here is HTML code that adds references to the jQuery and Vintasoft JavaScript files:
    
    • HTML

    <link rel="stylesheet" type="text/css" href="~/js/jquery-ui-css/jquery-ui.min.css">
    <link rel="stylesheet" type="text/css" href="~/lib/Vintasoft/Vintasoft.Imaging.css">
    <link rel="stylesheet" type="text/css" href="~/lib/Vintasoft/Vintasoft.Imaging.Dicom.css">
    
    <script src="~/js/jquery-3.3.1.min.js" type="text/javascript"></script>
    <script src="~/js/jquery-ui.min.js" type="text/javascript"></script>
    
    <script src="~/lib/Vintasoft/Vintasoft.Shared.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.Dialogs.jQueryUI.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.Dicom.js" type="text/javascript"></script>
    <script src="~/lib/Vintasoft/Vintasoft.Imaging.Dicom.Dialogs.jQueryUI.js" type="text/javascript"></script>
    
    

    
    
  
  Add HTML markup (a div-element that will display DICOM viewer) to the web view:
  
  Here is HTML markup code:
  
  • HTML

  <div class="text-center">
      <h1>VintaSoft DICOM Viewer Demo (ASP.NET Core)</h1>
  
      <div id="dicomControlContainer" class="dicomControlContainer"></div>
  </div>
  
  

  
  
• Open "wwwroot\css\site.css" file, add CSS-style for "dicomControlContainer" to the "site.css" file:
  • HTML

  html {
    font-size: 14px;
  }
  
  @media (min-width: 768px) {
    html {
      font-size: 16px;
    }
  }
  
  .btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
  }
  
  html {
    position: relative;
    min-height: 100%;
  }
  
  body {
    margin-bottom: 60px;
  }
  
  .form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
  }
  
  .form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
  }
  
  .dicomControlContainer {
      height: 800px;
  }
  
  

  
  
  
• Open file "wwwroot\js\site.js", add JavaScript code that initializes and creates DICOM viewer:
  
  Here is JavaScript code that initializes and displays DICOM viewer:
  
  • JavaScript

  // 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("vintasoft/api/MyVintasoftFileApi");
  Vintasoft.Shared.WebServiceJS.defaultDicomService =
      new Vintasoft.Shared.WebServiceControllerJS("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"]);
  
  

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