Create a blank ASP.NET WebForms application.

Server side: Add references to the Vintasoft assemblies to ASP.NET WebForms 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.Gdi.dll assembly.
  
• Open "Default.aspx.cs" file, add code line "Vintasoft.Imaging.Drawing.Gdi.GdiGraphicsFactory.SetAsDefault();" at the beginning of Page_Load method - 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.

• Add the "Handlers" folder to ASP.NET WebForms application.

• Create web service that allows to upload/download file

  • Press the right mouse button on the "Handlers" folder and select the "Add => Generic handler" menu from context menu
    
  • Specify the handler name "MyVintasoftFileHandler" and press the "Ok" button
  • Specify that MyVintasoftFileHandler class is derived from VintasoftImaging.Web.HttpHandlers.VintasoftFileHandler class
    
    Here are C# source codes of MyVintasoftFileHandler class:
    
    • C#

    namespace WebApplication1.Handlers
    {
        public class MyVintasoftFileHandler : Vintasoft.Imaging.Web.HttpHandlers.VintasoftFileHandler
        {
        }
    }
    
    

• Create web service that allows to work with DICOM images

  • Press the right mouse button on the "Handlers" folder and select the "Add => Generic handler" menu from context menu
    
  • Specify the handler name "MyVintasoftDicomHandler" and press the "Ok" button
  • Specify that MyVintasoftDicomHandler class is derived from VintasoftImaging.Dicom.Web.HttpHandlers.VintasoftDicomHandler class
    
    Here are C# source codes of MyVintasoftDicomHandler class:
    
    • C#

    using Vintasoft.Imaging.Dicom.Web.HttpHandlers;
    
    namespace WebApplication1.Handlers
    {
        /// <summary>
        /// ASP.NET HTTP handler that handles HTTP requests from clients and allows to work with DICOM images on a server.
        /// </summary>
        public class MyVintasoftDicomHandler : VintasoftDicomHandler
        {
    
            /// <summary>
            /// Initializes a new instance of the <see cref="MyVintasoftDicomHandler"/> class.
            /// </summary>
            public MyVintasoftDicomHandler()
                : base()
            {
            }
    
        }
    }
    

Client side: Add JavaScript libraries to the project.

• Add the "Scripts\" folder to ASP.NET WebForms application if folder does not exist.
  
  
• Copy Vintasoft.Shared.js, Vintasoft.Imaging.js, Vintasoft.Imaging.Dicom.js and Vintasoft.Imaging.Dicom.css files from "<InstallPath>\VintaSoft Imaging .NET v12.5\Bin\JavaScript\" folder into "Scripts\" folder.
  
  
• 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" jQuery UI dialogs (modern dialogs with ability to move dialog):
    • Copy jQuery file into "Scripts\" folder.
      You can use "jquery-3.3.1.min.js" file from "<InstallPath>\VintaSoft Imaging .NET v12.5\Examples\ASP.NET MVC\CSharp\AspNetMvcImagingDemo\Scripts\External\" folder or jQuery file from any other source.
    • Copy jQuery UI files and folders into "Scripts\" folder.
      You can use "jquery-ui.min.js" file and "jquery-ui-css" folder from "<InstallPath>\VintaSoft Imaging .NET v12.5\Examples\ASP.NET MVC\CSharp\AspNetMvcImagingDemo\Scripts\External\" folder or jQuery UI files and folders from any other source.
    • 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 "Scripts\" folder.
      
      
  • If web DICOM viewer should use custom "standard" dialogs,please read how to create custom "standard" dialogs here.

Client side: Add JavaScript code, which initializes and dispalys DICOM viewer, to the Default web form.

• Create folder "UploadedImageFiles\SessionID" and copy 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.
  
  
• Create the Default web form - file "Default.aspx".
  • Press the right mouse button on the project and select the "Add => WebForm" menu from context menu:
    
    
    
  • Specify "Default" as web form name => created web form will be opened:
    
  
  
• Add references to the JavaScript files:
  
  Here is HTML code that adds references to jQuery and Vintasoft JavaScript files:
  
  • HTML

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

  <form id="form1" runat="server">
      <h1 style="text-align: center">VintaSoft DICOM Viewer Demo (ASP.NET WebForms)</h1>
      <div id="dicomControlContainer" style="height: 800px"></div>
  </form>
  

  
  
  
• Add JavaScript code that displays DICOM viewer:
  
  Here is JavaScript code (with page markup) that displays DICOM viewer:
  
  • JavaScript

  <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1.Default" %>
  
  <!DOCTYPE html>
  
  <html xmlns="http://www.w3.org/1999/xhtml">
  <head runat="server">
      <title>VintaSoft DICOM Viewer Demo (ASP.NET WebForms)</title>
  
      <style>
          * {
              -webkit-box-sizing: border-box;
              box-sizing: border-box;
              border-collapse: collapse;
          }
      </style>
  
      <link rel="stylesheet" type="text/css" href="Scripts/jquery-ui-css/jquery-ui.min.css">
      <link rel="stylesheet" type="text/css" href="Scripts/Vintasoft.Imaging.css">
      <link rel="stylesheet" type="text/css" href="Scripts/Vintasoft.Imaging.Dicom.css">
  
      <script src="Scripts/jquery-3.3.1.min.js" type="text/javascript"></script>
      <script src="Scripts/jquery-ui.min.js" type="text/javascript"></script>
  
      <script src="Scripts/Vintasoft.Shared.js" type="text/javascript"></script>
      <script src="Scripts/Vintasoft.Imaging.js" type="text/javascript"></script>
      <script src="Scripts/Vintasoft.Imaging.Dicom.js" type="text/javascript"></script>
      <script src="Scripts/Vintasoft.Imaging.Dialogs.jQueryUI.js" type="text/javascript"></script>
      <script src="Scripts/Vintasoft.Imaging.Dicom.Dialogs.jQueryUI.js" type="text/javascript"></script>
  </head>
  <body>
      <form id="form1" runat="server">
          <h1 style="text-align: center">VintaSoft DICOM Viewer Demo (ASP.NET WebForms)</h1>
          <div id="dicomControlContainer" style="height: 800px"></div>
      </form>
  
      <script type="text/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.WebServiceHandlerJS("/Handlers/MyVintasoftFileHandler.ashx");
          Vintasoft.Shared.WebServiceJS.defaultDicomService =
              new Vintasoft.Shared.WebServiceHandlerJS("/Handlers/MyVintasoftDicomHandler.ashx");
  
          // 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>
  </body>
  </html>
  
  

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