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INFO:WDV In .NET 6 (.NET Core) - Getting Started

Tananda
DotImage

SEE ALSO

Before we get started, it's important to note that this document is focusing only on the aspects of getting started with WDV in the context of ASP.NET Core web applications. We will discuss the differences between WDV / WDT in ASP.NET Core and standard ASP.NET, but we won't go into strenuous details about WDV and some of the more advanced things you can do with it.

This is because there is very little functional difference between WDV/WDT in ASP.NET Core versus ASP.NET. Herein we hope to give you the fundamentals you need to operate within the ASP.NET Core paradigm, and give you the tools to understand how to hook into the server side events and add server side code, but once you understand how to hook in / the analogy to what we call the "handler" in the ASP.NET version, Any of the implementation details are pretty much the same.

All of this means that you may want to have a look at our related papers/articles:

GETTING STARTED

When creating a new application using the WebDocumentViewer, there are a few steps you will need in order to get the project up and running.

We will use this document to discuss the requirements of using the WebDocumentViewer within the context of an ASP.NET Core web application targeting the .NET framework, and then walk through its creation, step by step.

TECHNICAL REQUIREMENTS

.NET 6

It is important to note that this article applies only to 11.4.0 and newer, using our new 5.0 dlls to target .NET 6.

The reason our DLLS are labeled 5.0 is that our .NET 5 dlls work for both .NET 5 and .NET 6 - however, Microsoft has end of life-end of supported .NET 5, thus we will be using our SDK to target and support .NET 6 in this instance.

Development Tools/Environment

This document and our SDK assume that you're a developer familiar with basic use of Visual Studio, IIS Express or IIS, and general web application development practices using MS Visual Studio 2022 or later. The samples will be using an HTML 5 approach in an "Empty" (Minimal) ASP .NET Core web application targeting.NET Core 6.0 targeting 64 bit application pool and using Visual Studio's built in IIS Express web server.

To ensure you're using the x64 version of IISExpress, in Visual Studio, go to Tools -> Options and then in the options menu, navigate to Projects and Solutions -> Web Projects and ensure the "Use the 64 bit version of IIS Express for web sites and projects" option is checked

NOTE: There is no major difference in using our control in MVC vs non-MVC apps - the only practical differences are that MVC likes to put scripts and css in specific locations and uses a slightly different means of interpolating paths in includes. All of this information should be able to be applied in an MVC app - just make sure you put all the markup on a single ASPX view.

We will be providing examples in C#. Our SDK works with VB.NET as well, but for the sake of simplicity any .NET code will be provided in C#. You can use a converter tool such as Telerik Code converter to convert examples to VB.NET.

The WebDocumentViewer also requires jQuery, jQueryUI, and Raphael

Our SDK ships with the minimum version of all required libraries.. our ASP.NET Core sample here is going to make use of our published packages (we may actually show options for the deprecated bower as well as using npm packages and manual adding of resources). It IS possible to update to newer versions if you like.. but whatever you choose, you should be aware of the MINIMUM required.

On installing our SDK, the scripts will be delivered to they are placed in:
C:\Program Files (x86)\Atalasoft\DotImage 11.4\bin\WebResources\WebDocViewer

As of 11.4.0.0, these are:

  • jquery-3.5.1.min.js
  • jquery-ui-1.13.1.min.js
  • raphael-min.js
  • clipboard.min.js
  • atalaWebDocumentViewer.js
  • jquery-ui-1.13.1.min.css
  • atalaWebDocumentViewer.css

SDK Requirements / Versions

A brief set of instructions for downloading our SDK and activating a license will be given, but the rest of the document assumes you've installed the latest DotImage SDK (currently 11.4.0.0 as of June, 2022)

We do not currently provide access for our ASP.NET Core web components directly in the SDK install, so this tutorial will be using our NuGet packages.

If you're a licensed developer, or are actively evaluating our SDK and run into problems/questions, you are welcome to contact support. You can make a support case in writing at our support portal. You may also call in to support during our normal business hours Support Hours: M - F from 8AM - 5PM EDT (New York Time)
Call us: 1-781-743-2119

STANDARD TROUBLESHOOTING

Web applications with WebDocumentViewer / WebDocumentThumbnailer have a lot of "moving parts" and troubleshooting can seem a daunting task.

There is a free third party tool that can greatly enhance troubleshooting and assist you in reporting issues to support

If you are having issues with WebDocumentViewer, problems related to the web components are best diagnosed by looking at a log of the network traffic. Most commonly a faulting application will clearly show a 500 internal server error being thrown and the full response body of that error will offer a great deal of insight into the root cause (licensing issues, and errors in the WebDocumentRequestHandler will most often show up in the 500 error response body)

We recommend Fiddler if you need to collect a log and report it to support.

Please download, install, and run Fiddler web logging

Use it to collect a log while you reproduce the issue, then save the log as a native .saz file and and attach it to your support case as a file attachment/ (please do not save as CSV or text log. The native SAZ file gives us much better access to the tools we need to help diagnose your issue)

PLEASE NOTE: you need to capture a session while NOT using SSL/HTTPS. Fiddler logs cannot see into HTTPS without enabling a special certificate which we do not recommend.. if your capture is of an HTTPS session we will not get useful diagnostic information from the log

INSTALLATION AND LICENSING

You may have already installed our SDK from the download site latest version of Atalasoft DotImage SDK, and activated a paid or eval license. If so that's fine. The licensing can be done using our licensing component NuGet package...

NOTE: The current version is 11.4.0.0 as of June 2022. updates of the SDK happen with regularity. We work hard not to make breaking changes so this guide should be compatible with future releases. We will update the specific technical details as needed as changes arise

If you have not done so, please log in or create an account with Atalasoft so that you can activate our SDK.

Please note: the following is from our older document using VS2017 - we have not yet had a chance to update the screenshots etc.. but please do this in VS2022 - there have been some reports that the activation wizard won't install properly as a visual studio extension in VS2022. If you run into issues you can use the standalone activation wiz mentioned in the following KB: HOWTO: Activate DotImage SDK or Server (Including Offline Activation)

  • In Visual Studio, go to Tools->Extensions and Updates
  • Select the Online option
  • In the search box, type "Atalasoft"
  • Select Atalasoft DotImage Activation Wizard and click Download



  • Close the tab and close Visual Studio (needs visual studio to close to finish the install)



  • The VSIX installer will pop a dialog asking if you want to Modify Visual Studio...
  • Click the Modify and allow the process to complete



  • Once the install is complete close the install window and restart Visual Studio



  • There should now be an "Activate DotImage" option under your Tools option in Visual Studio... click it... this will start the activation wizard.



  • If you have SDK serials for DotImage and/or WingScan use the "Activate an SDK serial for use on this machine or a server license" option and activate your serials for version 11.3
  • If you do not yet have licenses, you can select the "request 30 day evaluation"
  • If you run into issues activating or require assistance, please contact support

NOTE for IIS users: The licensing above should be sufficient if you're using the built in web server in Visual Studio (IIS Express.. which this document assumes you are doing) but if you are using a local copy of IIS, then the IIS process does not run as your user name so it will not pick up your licenses. You'll need to take the extra step of copying your licenses into the application bin directory.

Assuming you have an app named WdvAspNetCoreSample hosted in IIS under:
c:\inetpub\wwwroot\WdvDotNet6\

Then you'd copy your licenses from:
C:\users\YOUR_USERNAME\AppData\Local\Atalasoft\DotImage 11.4\
to
c:\inetpub\wwwroot\WdvDotNet6\bin\

EXAMPLE 1

BUILDING A MINIMAL WEB VIEWING APP

We're going to be creating a very minimal WebDocumentViewer (WDV) based application which will also make use of our WebDocumentThumbnailer (WDT).

While this may seem not too useful, it's the fundamental minimum you need to get the WDV running with ASP.NET Core. Don't worry, you can easily get more fancy (we have other documents and whitepapers that go into more advanced use cases), but this tutorial will give you the basic hooks to see how to get it running. For now, we're going to start with the basics.

The first step assumes you've licensed yourself as instructed above or by installing the SDK and running the license wizard to either request a 30 day evaluation or activate paid license for DotImage Document Imaging.

We will be using Visual Studio 2022. You can use later versions of Visual Studio (as available), however for the purpose of this project, 2022 is the platform we will be following. From there, you will create a new Empt Asp.NET Core Project. Lets also target .NET 6 as our target framework, since it is the minimum version that this particular use case can support.

Starting the Project

  • Open Visual Studo 2022
  • Create a new ASP.NET Core Empty project
  • Name the project/solution WdvDotNet6
  • On the Additional Information dialog, be sure to select .NET 6.0 (Long term support) for your framework. You can choose to Configure for HTTPS or not. NOTE: if you wish to enable Docker you MUST choose windows Linux is not supported)
  • Now you have your empty starting project

Prerequisites (NuGet Packages)

  • Now, we need to add the relevant NuGet packages for WDV and our Atalasoft references
  • Go to Tools -> NuGet Package Manager -> Package Manager Console
  • at the PM> prompt type in the following and hit enter:
    Install-Package Atalasoft.DotImage.WebControls.Core.x64

  • Again, at the PM> prompt type in the following and hit enter:
    Install-Package Microsoft.AspNetCore.StaticFiles

Prerequisites (Additional Configuration)

This is also new to .NET 6 - we must directly edit the project file to add a needed config otpion

  • Hit your Save All button on your solution
  • right click on the project (WdvDotNet6) in solution explorer and select Unload Project
  • Now right click on the unloaded project (WdvDotNet6 (unloaded)) and select Edit Project File
  • Find the Property Group and change
    <TargetFramework>net6.0</TargetFramework>
    to
    <TargetFramework>net6.0-windows</TargetFramework>
  • under that, add UseWindowsForms true
    <UseWindowsForms>true</UseWindowsForms>
  • Your project file should look something like this:
    <Project Sdk="Microsoft.NET.Sdk.Web">
    
      <PropertyGroup>
        <TargetFramework>net6.0-windows</TargetFramework>
        <UseWindowsForms>true</UseWindowsForms>
        <Nullable>enable</Nullable>
        <ImplicitUsings>enable</ImplicitUsings>
      </PropertyGroup>
    
      <ItemGroup>
        <Folder Include="wwwroot\" />
      </ItemGroup>
    
      <ItemGroup>
        <PackageReference Include="Atalasoft.DotImage.WebControls.Core.x64" Version="11.4.0.251" />
        <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="2.2.0" />
      </ItemGroup>
    
    </Project>
    
  • Save and close that and then right click on the (WdvDotNet6) projet and select Reload Project

Prerequisites (wwwroot folder)

This part is very much new to .NET 6.. in previous versions, the wwwroot folder was created for you - but we must do this manually

  • In solution explorer right click on the project (WdvDotNet6 in our case) and create a new folder and name it "wwwroot" exactly

    Note how it gets a special icon - this is a special folder and must be named exactly wwwroot

Prerequisites (Clientside Dependencies)

Manual Installation

  • Download the clientside resources DotImage_ClientSide_Web_Resources_v11.4.0.0.zip
  • Unzip this file to a known location
  • Using Windows Explorer, navigate to the now unzipped directory
  • COPY the WebResources directory in its entirety to the wwwroot/lib location in your solution. We strongly recommend doing this from Windows Explorer (source) to Visual Studio Solution Explorer (destination) so that the files are ADDED to your project
  • Skip to the next step: Prerequisites (Other Required Files)

Prerequisites (Other Required Files)

We need to add the sample images we will be reading from

  • Download WdvDotNet6_SampleImages.zip
  • Unzip this file to a known location
  • Using Windows Explorer, navigate to the now unzipped AspNetCore_SampleImages directory
  • COPY the images directory in its entirety to the wwwroot location in your solution. We strongly recommend doing this from Windows Explorer (source) to Visual Studio Solution Explorer (destination) so that the files are ADDED to your project
  • When complete, your Solution Explorer will look something like this:

Prerequisites (WDV Callbacks class)

We need to set up a callback handler for the server side code for WDV. To do this, we add a new class named MyWdvCallbacks

  • Right click on the (wdvDotNet6) project and Add --> New Item
  • Select Class and name it MyWdVCallbacks.cs
  • Go to the new MyWdvCallbacks.cs class code and it will loook like this:
  • Modify it to add the following at the top:
    using Atalasoft.Imaging.WebControls;
    using Atalasoft.Imaging.WebControls.Core;
    
  • Next, modify the Public class MydvCallbacks to inherit from WebDocumentViewerCallbacks
    public class MyWdvCallbacks: WebDocumentViewerCallbacks
    {
    }
    
  • Now,inside the public class MyWdvCallbacks: WebDocumentViewerCallbacks { cloture add:
            /// IMPORTANT: make sure you fully disable File Upload if you're not using it by adding this handler
            public override void FileUpload(FileUploadEventArgs args)
            {
                args.Cancel = true;
                base.FileUpload(args);
            }
            public override void DocumentInfoRequested(DocumentInfoRequestedEventArgs args)
            {
                Console.WriteLine("**********===DocumentInfoRequested===**********");
                base.DocumentInfoRequested(args);
            }
            public override void ImageRequested(ImageRequestedEventArgs args)
            {
                Console.WriteLine("**********===ImageRequested===**********");
                base.ImageRequested(args);
            }
            /*
             * The above was just an example of hooking to the two main events.. you can handle any exposed event here
             *
             * //.. most common ...
             *  AnnotationDataRequested
             *  DocumentSave
             *  DocumentStreamWritten
             *  AnnotationStreamWritten
             *  //.. less common .
             *  PageTextRequested
             *  PdfFormRequested
             *  //.. rarely if ever used .. 
             *  ReleaseDocumentStream
             *  ReleasePageStream
             *  ResolveDocumentUri
             *  ResolvePageUri
             */
        }
    
  • The final MyWdvCallbacks.cs file will look like this:
    using Atalasoft.Imaging.WebControls;
    using Atalasoft.Imaging.WebControls.Core;
    
    namespace WdvDotNet6
    {
        public class MyWdvCallbacks : WebDocumentViewerCallbacks
        {
            /// IMPORTANT: make sure you fully disable File Upload if you're not using it by adding this handler
            public override void FileUpload(FileUploadEventArgs args)
            {
                args.Cancel = true;
                base.FileUpload(args);
            }
            public override void DocumentInfoRequested(DocumentInfoRequestedEventArgs args)
            {
                Console.WriteLine("**********===DocumentInfoRequested===**********");
                base.DocumentInfoRequested(args);
            }
            public override void ImageRequested(ImageRequestedEventArgs args)
            {
                Console.WriteLine("**********===ImageRequested===**********");
                base.ImageRequested(args);
            }
            /*
             * The above was just an example of hooking to the two main events.. you can handle any exposed event here
             *
             * //.. most common ...
             *  AnnotationDataRequested
             *  DocumentSave
             *  DocumentStreamWritten
             *  AnnotationStreamWritten
             *  //.. less common .
             *  PageTextRequested
             *  PdfFormRequested
             *  //.. rarely if ever used .. 
             *  ReleaseDocumentStream
             *  ReleasePageStream
             *  ResolveDocumentUri
             *  ResolvePageUri
             */
        }
    }
    

Program.cs Modifications

In previous ASP.NET Core, there was a startup.cs file that was used for "middleware". In .NET 6, this is done in the program.cs instead.

The site created by Empty ASP .NET Core app template .NET 6 app uses the new minimal hosting model (only one Program.cs file is present in the project, Startup.cs file is absent). But at the same time, this is not a necessary condition and it is possible to use the same files as for previous versions of ASP .NET Core (see Use Startup with the new minimal hosting model). If, after all, a new approach is used, the combined Program.cs file for WDV app will look like:

  • The original program.cs from the blank project will look like this:
  • Before the line var builder = WebApplication.CreateBuilder(args);, add the following:
    using Atalasoft.Imaging.Codec;
    using Atalasoft.Imaging.Codec.Pdf;
    using Atalasoft.Imaging.WebControls.Core;
    
    RegisteredDecoders.Decoders.Add(new PdfDecoder() { Resolution = 200, RenderSettings = new RenderSettings() { AnnotationSettings = AnnotationRenderSettings.RenderNone } });
    
  • Now, delete or comment out this line:app.MapGet("/", () => "Hello World!");
    and replace it with
    app.UseDefaultFiles();
    app.UseStaticFiles();
    
    app.Map("/wdv", wdvApp => { wdvApp.RunWebDocumentViewerMiddleware(new WdvDotNet6.MyWdvCallbacks()); });
    
  • Your Program.cs file will now look like this:
    using Atalasoft.Imaging.Codec;
    using Atalasoft.Imaging.Codec.Pdf;
    using Atalasoft.Imaging.WebControls.Core;
    
    RegisteredDecoders.Decoders.Add(new PdfDecoder() { Resolution = 200, RenderSettings = new RenderSettings() { AnnotationSettings = AnnotationRenderSettings.RenderNone } });
    
    var builder = WebApplication.CreateBuilder(args);
    var app = builder.Build();
    
    app.UseDefaultFiles();
    app.UseStaticFiles();
    
    app.Map("/wdv", wdvApp => { wdvApp.RunWebDocumentViewerMiddleware(new WdvDotNet6.MyWdvCallbacks()); });
    
    
    app.Run();
    

Last step: Clientside scripts and Markup

The setup for web document viewing just requires placing some JavaScript, CSS, and HTML into your page.

  • Create a new index.html page which will host your web controls:
    • Right click on the wwwroot section of the project in Solution explorer and choose Add New
    • select HTML Page and name it "index.html" and click Add
  • Edit the new index.html file
    • The default head section looks like this:
    • Add in the following script block after the title tags:
          <!-- Scripts for Web Viewing -->
          <script src="lib/WebDocViewer/jquery-3.5.1.min.js" type="text/javascript"></script>
          <script src="lib/WebDocViewer/Jquery-ui-1.13.1.min.js" type="text/javascript"></script>
          <script src="lib/WebDocViewer/raphael-min.js"></script>
          <script src="lib/WebDocViewer/clipboard.min.js"></script>
          <script src="lib/WebDocViewer/atalaWebDocumentViewer.js" type="text/javascript"></script>
      <!-- Style for Web Viewer --> <link href="lib/WebDocViewer/jquery-ui-1.13.1.min.css" rel="stylesheet" /> <link href="lib/WebDocViewer/atalaWebDocumentViewer.css" rel="stylesheet" />
    • Now, we also need to add the JavaScript that will initialize and configure the main WDV and WDT viewers.
          <script type="text/javascript">
              var _viewer;
              var _thumbs;
              // Initialize Web Viewing
              $(function () {
                  try {
                      // Initialize Web Document Viewer
                      _viewer = new Atalasoft.Controls.WebDocumentViewer({
                          parent: $('#_containerViewer'),
                          toolbarparent: $('#_toolbar1'),
                          serverurl: 'wdv',
                          allowannotations: true,
                          forcepagefit: true
                      });
                      _thumbs = new Atalasoft.Controls.WebDocumentThumbnailer({
                          parent: $('#_containerThumbs'),
                          serverurl: 'wdv',
                          allowannotations: true,
                          viewer: _viewer
                      });
                      loadFile();
                  } catch (error) {
                      appendStatus("Thrown error: " + error.description);
                  }
              });
      
              function loadFile() {
                  _thumbs.OpenUrl($('#FileSelectionList').val(), '');
              }
              // Show status and error messages
              function appendStatus(msg) {
                  var stat = $("#status");
                  stat.append(msg + "<br>");
              }
          </script>
      
    • Finally, we need to add in the html markup that will give us our viewer user interface and the open file selection boxes.
          <h1>Atalasoft ASP.NET Core Web Viewing Sample</h1>
          <form id="WDVForm" runat="server">
              Select File to display:
              <select ID="FileSelectionList" onchange="loadFile();">
                  <option value="images/Test.tif">Test.tif</option>
                  <option value="images/Test.pdf">Test.pdf</option>
              </select>
              <div style="width: 900px;">
                  <div id="_toolbar1"></div>
                  <div id="_containerThumbs" style="width: 180px; height: 600px; display: inline-block;"></div>
                  <div id="_containerViewer" style="width: 710px; height: 600px; display: inline-block;"></div>
              </div>
              <div id="status"></div>
          </form>
      
    • Your final index.html page should be this:
      <!DOCTYPE html>
      <html>
      <head>
          <meta charset="utf-8" />
          <title></title>
          <!-- Scripts for Web Viewing -->
          <script src="lib/WebDocViewer/jquery-3.5.1.min.js" type="text/javascript"></script>
          <script src="lib/WebDocViewer/jquery-ui-1.13.1.min.js" type="text/javascript"></script>
          <script src="lib/WebDocViewer/raphael-min.js"></script>
          <script src="lib/WebDocViewer/clipboard.min.js"></script>
          <script src="lib/WebDocViewer/atalaWebDocumentViewer.js" type="text/javascript"></script>
          <!-- Style for Web Viewer -->
          <link href="lib/WebDocViewer/jquery-ui-1.13.1.min.css" rel="stylesheet" />
          <link href="lib/WebDocViewer/atalaWebDocumentViewer.css" rel="stylesheet" />
          <script type="text/javascript">
              var _viewer;
              var _thumbs;
              // Initialize Web Viewing
              $(function () {
                try {
                  // Initialize Web Document Viewer
                  _viewer = new Atalasoft.Controls.WebDocumentViewer({
                    parent: $('#_containerViewer'),
                    toolbarparent: $('#_toolbar1'),
                    serverurl: 'wdv',
                    allowannotations: true,
                    forcepagefit: true
                  });
                  _thumbs = new Atalasoft.Controls.WebDocumentThumbnailer({
                    parent: $('#_containerThumbs'),
                    serverurl: 'wdv',
                    allowannotations: true,
                    viewer: _viewer
                  });
                  loadFile();
                } catch (error) {
                  appendStatus("Thrown error: " + error.description);
                }
              });
      function loadFile() { _thumbs.OpenUrl($('#FileSelectionList').val(), ''); }
      // Show status and error messages function appendStatus(msg) { var stat = $("#status"); stat.append(msg + "<br>"); } </script>
      </head> <body> <h1>Atalasoft ASP.NET Core Web Viewing Sample</h1> <form id="WDVForm" runat="server"> Select File to display: <select ID="FileSelectionList" onchange="loadFile();"> <option value="images/Test.tif">Test.tif</option> <option value="images/Test.pdf">Test.pdf</option> </select> <div style="width: 900px;"> <div id="_toolbar1"></div> <div id="_containerThumbs" style="width: 180px; height: 600px; display: inline-block;"></div> <div id="_containerViewer" style="width: 710px; height: 600px; display: inline-block;"></div> </div> <div id="status"></div> </form> </body> </html>

Run It

If all has gone well, you should now be able to run the solution and will see this on startup:

EXAMPLE 2 - ADDING WEB SCANNING (WingScan)

COMING SOON:

We will be fleshing out this section soon with an example where we build off the previous to add our WebCapture (WingScan web based scanning). The extremely abbreviated version of this until then is

  • In the wwwroot folder, add a new folder called "atala-capture-upload"
  • In the wwwroot folder add a new folder called WebCapture
  • Copy the contents of C:\Program Files (x86)\Atalasoft\DotImage 11.4\bin\WebResources\WebCapture into there
  • Update your index.html page to add (in the header section after the Scripts for Web Viewing and before the Style for Viewer:
    <!-- Script for WebCapture -->
    <script src="lib/WebCapture/atalaWebCapture.js" type="text/javascript"></script>
  • Also in your index.html page, in the <body> cloture, add:
    <div id="scanDiv">
        <p>
            Select your scanner and click the scan button...
            the file will be uploaded to /atala-capture-upload/ with a unique filename
            (the filename will appear in the status below)
        </p>
        <p> </p>
        <p>
            Select Scanner:
            <select class="atala-scanner-list" disabled="disabled" name="scannerList" style="width:22em">
                <option selected="selected">(no scanners available)</option>
            </select>
    
            <!-- DO NOT USE <input type="button" class="atala-scan-button" value="Scan" /> -->
            <input type="button" id="scanNOW" value="Scan" onclick="scanWithSelectedScanner(); return false;" />
        </p>
    </div>
  • Again, in your index.html, add another script block with the followingr
    <script type="text/javascript">
        function scanWithSelectedScanner() {
            Atalasoft.Controls.Capture.WebScanning.scanningOptions.scanner = $('.atala-scanner-list').val();
            Atalasoft.Controls.Capture.WebScanning.scan();
        }
        // this is a really simplified error handler for now. We will expand on this later
        function scanErrorHandler(msg, params) {
            alert(msg);
        }
    </script>
  • In your Program.cs page, change
    app.Map("/wdv", wdvApp => { wdvApp.RunWebDocumentViewerMiddleware(new WebCaptureDotNet6.MyWdvCallbacks(env)); });

    to
    app.Map("/wcs", wcsApp => wcsApp.RunWebCaptureMiddleware())
    .Map("/wdv", wdvApp => { wdvApp.RunWebDocumentViewerMiddleware(new WebCaptureDotNet6.MyWdvCallbacks(env)); });
  • Build and run the solution

Sample Apps And Resources Download

It is our hope that you've been following along with the tutorial and have successfully built your solution. However, if you've run into issues or if you want a working reference app, we've implemented the WdvAspNetCoreSample three separate times. Once with manual clientside package install, one with bower packages and one with npm packages.

CONCLUSION

In many respects we have barely even scratched the surface of the WebDocumentViewer and WebDocumentThumbnailer. This paper was meant as a very basic getting started that will serve you well as a step by step guide to just getting the viewer set up and working under ASP.NET Core. Atalasoft support engineers use a very similar base "boilerplate" app that we used as our inspiration for this demo nearly every day .. as a quick test harness / repro base solution to quickly test customer cases/issues and to test out various coding ideas having to do with WDV/ WDT.

In order to keep this document to a manageable size, we will end here for now. There are plans in the works for more advanced tutorials.. all of those will focus on the starting apps we've done here.

If you're looking for a getting started for WingScan .. our Web Scanning SDK, please see INFO: WingScan Whitepaper - Getting Started with Web Scanning

v002 - 2022/06/27 - TD

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