993766: Updated Sample for Redaction ASP.NET Core

Redaction/Add Redaction Annotation Programmatically/NuGet.config

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+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>
+  <fallbackPackageFolders>
+    <clear />
+  </fallbackPackageFolders>
+  <disabledPackageSources>
+    <clear />
+  </disabledPackageSources>
+</configuration>

Redaction/Add Redaction Annotation Programmatically/PDFViewerSample.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.EJ2.AspNet.Core" Version="*" />
+    <PackageReference Include="Syncfusion.EJ2.PdfViewer.AspNet.Core" Version="*" />
+  </ItemGroup>
+
+</Project>

Redaction/Add Redaction Annotation Programmatically/PDFViewerSample.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.32112.339
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PDFViewerSample", "PDFViewerSample.csproj", "{39AA1883-BB43-4C46-9892-6033EA59C990}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{39AA1883-BB43-4C46-9892-6033EA59C990}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{39AA1883-BB43-4C46-9892-6033EA59C990}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{39AA1883-BB43-4C46-9892-6033EA59C990}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{39AA1883-BB43-4C46-9892-6033EA59C990}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {5F13CE16-9CC4-4755-AFB4-367F461A209C}
+	EndGlobalSection
+EndGlobal

Redaction/Add Redaction Annotation Programmatically/Pages/Error.cshtml

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+@page
+@model ErrorModel
+@{
+    ViewData["Title"] = "Error";
+}
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+@if (Model.ShowRequestId)
+{
+    <p>
+        <strong>Request ID:</strong> <code>@Model.RequestId</code>
+    </p>
+}
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to the <strong>Development</strong> environment displays detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>

Redaction/Add Redaction Annotation Programmatically/Pages/Error.cshtml.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using System.Diagnostics;
+
+namespace PDFViewerSample.Pages
+{
+    [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+    [IgnoreAntiforgeryToken]
+    public class ErrorModel : PageModel
+    {
+        public string? RequestId { get; set; }
+
+        public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+
+        private readonly ILogger<ErrorModel> _logger;
+
+        public ErrorModel(ILogger<ErrorModel> logger)
+        {
+            _logger = logger;
+        }
+
+        public void OnGet()
+        {
+            RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier;
+        }
+    }
+}

Redaction/Add Redaction Annotation Programmatically/Pages/Index.cshtml

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+@page
+@model IndexModel
+@{
+    ViewData["Title"] = "Redaction programmatic support (All-in-one)";
+}
+<div class="text-center">
+    <div style="margin-bottom:12px; display:flex; flex-wrap:wrap; gap:8px; align-items:center; justify-content:center;">
+        <button type="button" class="e-btn" onclick="addRedaction()">Add Redaction</button>
+        <button type="button" class="e-btn" onclick="deleteFirstRedaction()">Delete First Redaction</button>
+        <button type="button" class="e-btn" onclick="editRedaction()">Edit Redaction</button>
+        <button type="button" class="e-btn" onclick="addPageRedactions()">Add Page Redactions (1,3,5,7)</button>
+        <button type="button" class="e-btn e-primary" onclick="applyRedaction()">Apply Redaction</button>
+    </div>
+
+    <ejs-pdfviewer
+        id="pdfViewer"
+        style="height:640px; display:block"
+        resourceUrl="https://cdn.syncfusion.com/ej2/31.2.12/dist/ej2-pdfviewer-lib"
+        documentPath="https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf"
+        isExtractText="true">
+    </ejs-pdfviewer>
+</div>
+
+<script type="text/javascript">
+    // Make the viewer globally accessible to all handlers
+    window.onload = function () {
+        window.viewer = document.getElementById('pdfViewer').ej2_instances[0];
+
+        // Include Redaction UI entry in the main toolbar
+        viewer.toolbarSettings = {
+            toolbarItems: [
+                'OpenOption', 'UndoRedoTool', 'PageNavigationTool', 'MagnificationTool', 'PanTool',
+                'SelectionTool', 'CommentTool', 'SubmitForm', 'AnnotationEditTool', 'RedactionEditTool',
+                'FormDesignerEditTool', 'SearchOption', 'PrintOption', 'DownloadOption'
+            ]
+        };
+
+        // Default redaction appearance settings (used by UI and when not overridden)
+        viewer.redactionSettings = {
+            overlayText: 'Confidential',
+            markerFillColor: '#FF0000',
+            markerBorderColor: '#000000',
+            isRepeat: false,
+            fillColor: '#000000',     // final fill color after redaction is applied
+            fontColor: '#FFFFFF',
+            fontSize: 12,
+            fontFamily: 'Arial',
+            textAlign: 'Center'
+        };
+    };
+
+    // 1) Add a single redaction annotation programmatically
+    function addRedaction() {
+        if (!window.viewer) return;
+        viewer.annotation.addAnnotation('Redaction', {
+            bound: { x: 200, y: 480, width: 160, height: 80 },
+            pageNumber: 1,
+            overlayText: 'Confidential',
+            fillColor: '#000000',      // preview overlay/background
+            fontColor: '#FFFFFF',
+            fontSize: 12,
+            fontFamily: 'Arial',
+            markerFillColor: '#FF0000',
+            markerBorderColor: '#000000',
+            beforeRedactionsApplied: false
+        });
+        console.log('Redaction added');
+    }
+
+    // 2) Delete the first redaction annotation (if present)
+    function deleteFirstRedaction() {
+        if (!window.viewer) return;
+        var list = viewer.annotationCollection || [];
+        var firstRedaction = null;
+        for (var i = 0; i < list.length; i++) {
+            if (list[i].subject === 'Redaction') { firstRedaction = list[i]; break; }
+        }
+        if (firstRedaction) {
+            viewer.annotationModule.deleteAnnotationById(firstRedaction.annotationId);
+            console.log('First redaction deleted');
+        } else {
+            console.warn('No redaction found to delete.');
+        }
+    }
+
+    // 3) Edit existing redaction annotation properties
+    function editRedaction() {
+        if (!window.viewer) return;
+        var list = viewer.annotationCollection || [];
+        var edited = false;
+        for (var i = 0; i < list.length; i++) {
+            var item = list[i];
+            if (item.subject === 'Redaction') {
+                item.overlayText = 'EditedAnnotation';
+                item.markerFillColor = '#22FF00';
+                item.markerBorderColor = '#000000';
+                item.isRepeat = true;
+                item.fillColor = '#1F1F1F';
+                item.fontColor = '#FFD400';
+                item.fontSize = 14;
+                item.fontFamily = 'Symbol';
+                item.textAlign = 'Right';
+                item.beforeRedactionsApplied = false;
+                viewer.annotation.editAnnotation(item);
+                edited = true;
+            }
+        }
+        if (!edited) console.warn('No redaction found to edit.');
+        else console.log('Redaction(s) edited');
+    }
+
+    // 4) Add page redactions (entire pages) by page numbers (1-based)
+    function addPageRedactions() {
+        if (!window.viewer) return;
+        viewer.annotation.addPageRedactions([1, 3, 5, 7]);
+        console.log('Page redactions added for pages 1, 3, 5, 7');
+    }
+
+
+    // 5) Permanently apply all redaction marks
+    function applyRedaction() {
+        if (!window.viewer) return;
+        // Irreversible: original content will be removed
+        viewer.annotation.redact();
+        console.log('Redaction applied');
+    }
+</script>

Redaction/Add Redaction Annotation Programmatically/Pages/Index.cshtml.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Caching.Memory;
+using Syncfusion.EJ2.PdfViewer;
+using Newtonsoft.Json;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using System.Reflection;
+using System.Net;
+
+namespace PDFViewerSample.Pages
+{
+    [IgnoreAntiforgeryToken(Order = 1001)]
+    public class IndexModel : PageModel
+    {
+
+        private readonly Microsoft.AspNetCore.Hosting.IHostingEnvironment _hostingEnvironment;
+        private IMemoryCache _cache;
+
+        public IndexModel(Microsoft.AspNetCore.Hosting.IHostingEnvironment hostingEnvironment, IMemoryCache cache)
+        {
+            _hostingEnvironment = hostingEnvironment;
+            _cache = cache;
+        }
+    }
+}

Redaction/Add Redaction Annotation Programmatically/Pages/Privacy.cshtml

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+@page
+@model PrivacyModel
+@{
+    ViewData["Title"] = "Privacy Policy";
+}
+<h1>@ViewData["Title"]</h1>
+
+<p>Use this page to detail your site's privacy policy.</p>

Redaction/Add Redaction Annotation Programmatically/Pages/Privacy.cshtml.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace PDFViewerSample.Pages
+{
+    public class PrivacyModel : PageModel
+    {
+        private readonly ILogger<PrivacyModel> _logger;
+
+        public PrivacyModel(ILogger<PrivacyModel> logger)
+        {
+            _logger = logger;
+        }
+
+        public void OnGet()
+        {
+        }
+    }
+}

Redaction/Add Redaction Annotation Programmatically/Pages/Shared/_Layout.cshtml

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>@ViewData["Title"] - PDFViewerSample</title>
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
+    <!-- Syncfusion ASP.NET Core controls styles -->
+    <link rel="stylesheet" href="https://cdn.syncfusion.com/ej2/31.2.12/fluent.css" />
+    <!-- Syncfusion ASP.NET Core controls scripts -->
+    <script src="https://cdn.syncfusion.com/ej2/31.2.12/dist/ej2.min.js"></script>
+</head>
+<body>
+    <header>
+        <nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
+            <div class="container">
+                <a class="navbar-brand" asp-area="" asp-page="/Index">PDFViewerSample</a>
+                <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
+                        aria-expanded="false" aria-label="Toggle navigation">
+                    <span class="navbar-toggler-icon"></span>
+                </button>
+                <div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
+                    <ul class="navbar-nav flex-grow-1">
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-page="/Index">Home</a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-page="/Privacy">Privacy</a>
+                        </li>
+                    </ul>
+                </div>
+            </div>
+        </nav>
+    </header>
+    <div class="container">
+        <main role="main" class="pb-3">
+            @RenderBody()
+        </main>
+    </div>
+
+    <footer class="border-top footer text-muted">
+        <div class="container">
+            &copy; 2022 - PDFViewerSample - <a asp-area="" asp-page="/Privacy">Privacy</a>
+        </div>
+    </footer>
+
+    @await RenderSectionAsync("Scripts", required: false)
+    <!-- Syncfusion ASP.NET Core Script Manager -->
+    <ejs-scripts></ejs-scripts>
+</body>
+</html>

Redaction/Add Redaction Annotation Programmatically/Pages/Shared/_Layout.cshtml.css

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+/* Please see documentation at https://docs.microsoft.com/aspnet/core/client-side/bundling-and-minification
+for details on configuring this project to bundle and minify static web assets. */
+
+a.navbar-brand {
+  white-space: normal;
+  text-align: center;
+  word-break: break-all;
+}
+
+a {
+  color: #0077cc;
+}
+
+.btn-primary {
+  color: #fff;
+  background-color: #1b6ec2;
+  border-color: #1861ac;
+}
+
+.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
+  color: #fff;
+  background-color: #1b6ec2;
+  border-color: #1861ac;
+}
+
+.border-top {
+  border-top: 1px solid #e5e5e5;
+}
+.border-bottom {
+  border-bottom: 1px solid #e5e5e5;
+}
+
+.box-shadow {
+  box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
+}
+
+button.accept-policy {
+  font-size: 1rem;
+  line-height: inherit;
+}
+
+.footer {
+  position: absolute;
+  bottom: 0;
+  width: 100%;
+  white-space: nowrap;
+  line-height: 60px;
+}