845073: Sample to show and Hide Annotations

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.34607.79
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ShowHideAnnotations", "ShowHideAnnotations\ShowHideAnnotations.csproj", "{AEF9913F-0F38-4676-9A9F-D1042B5C30AC}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{AEF9913F-0F38-4676-9A9F-D1042B5C30AC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AEF9913F-0F38-4676-9A9F-D1042B5C30AC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AEF9913F-0F38-4676-9A9F-D1042B5C30AC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AEF9913F-0F38-4676-9A9F-D1042B5C30AC}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {31245B35-82FC-4C3B-A888-4730D0AD8EE0}
+	EndGlobalSection
+EndGlobal

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/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" />
+    <add key="nexus" value="https://nexus.syncfusioninternal.com/repository/nuget-hosted/" />
+  </packageSources>
+  <disabledPackageSources>
+    <clear />
+  </disabledPackageSources>
+  <fallbackPackageFolders>
+    <clear />
+  </fallbackPackageFolders>
+</configuration>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/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>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/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;
+        }
+    }
+
+}

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Pages/Index.cshtml

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+@page "{handler?}"
+@using ShowHideAnnotations.Pages
+@model IndexModel
+@{
+    ViewData["Title"] = "Home page";
+}
+
+<div class="text-center">
+    <button id="hideBtn">Hide Annotations</button>
+    <button id="unhideBtn">Show Annotations</button>
+    <ejs-pdfviewer id="pdfviewer" style="height:600px" resourceUrl="https://cdn.syncfusion.com/ej2/30.1.37/dist/ej2-pdfviewer-lib" documentPath="https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf">
+    </ejs-pdfviewer>
+</div>
+
+<script type="text/javascript">
+    var exportObject = null;
+
+    document.addEventListener('DOMContentLoaded', function() {
+        var pdfviewer = document.getElementById('pdfviewer').ej2_instances[0];
+
+        function HideAnnotations() {
+            pdfviewer.exportAnnotationsAsObject().then(function(value) {
+                exportObject = value;
+                pdfviewer.deleteAnnotations();
+            });
+        }
+
+        function UnHideAnnotations() {
+            if (exportObject) {
+                pdfviewer.importAnnotation(JSON.parse(exportObject));
+            }
+        }
+
+        document.getElementById('hideBtn').addEventListener('click', HideAnnotations);
+        document.getElementById('unhideBtn').addEventListener('click', UnHideAnnotations);
+    });
+</script>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/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;
+using Syncfusion.Pdf.Parsing;
+
+namespace ShowHideAnnotations.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;
+        }
+    }
+}

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/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>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/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()
+        {
+        }
+    }
+
+}

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/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="~/lib/bootstrap/dist/css/bootstrap.min.css" />
+    <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
+    <link rel="stylesheet" href="~/PDFViewerSample.styles.css" asp-append-version="true" />
+    <!-- Syncfusion ASP.NET Core controls styles -->
+    <link rel="stylesheet" href="https://cdn.syncfusion.com/ej2/30.1.37/fluent.css" />
+    <!-- Syncfusion ASP.NET Core controls scripts -->
+    <script src="https://cdn.syncfusion.com/ej2/30.1.37/dist/ej2.min.js"></script>
+</head>
+<body>
+    <div class="container">
+        <main role="main" class="pb-3">
+            @RenderBody()
+        </main>
+    </div>
+
+    <script src="~/lib/jquery/dist/jquery.min.js"></script>
+    <script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
+    <script src="~/js/site.js" asp-append-version="true"></script>
+
+    @await RenderSectionAsync("Scripts", required: false)
+    <!-- Syncfusion ASP.NET Core Script Manager -->
+    <ejs-scripts></ejs-scripts>
+</body>
+</html>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Pages/Shared/_Layout.cshtml.css

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+/* Please see documentation at https://learn.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;
+}

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Pages/Shared/_ValidationScriptsPartial.cshtml

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+<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
+<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Pages/_ViewImports.cshtml

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+@using PDFViewerSample
+@namespace PDFViewerSample.Pages
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
+@addTagHelper *, Syncfusion.EJ2

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Pages/_ViewStart.cshtml

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+@{
+    Layout = "_Layout";
+}

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Program.cs

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+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+builder.Services.AddRazorPages();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (!app.Environment.IsDevelopment())
+{
+    app.UseExceptionHandler("/Error");
+    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
+    app.UseHsts();
+}
+
+app.UseHttpsRedirection();
+app.UseStaticFiles();
+
+app.UseRouting();
+
+app.UseAuthorization();
+
+app.MapRazorPages();
+
+app.Run();

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Properties/launchSettings.json

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+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:12333",
+      "sslPort": 44366
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:5059",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:7232;http://localhost:5059",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/ShowHideAnnotations.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+       <PackageReference Include="Syncfusion.EJ2.AspNet.Core" Version="30.1.40" />
+       <PackageReference Include="Syncfusion.EJ2.PdfViewer.AspNet.Core" Version="100.2.100" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="wwwroot\Data\Annotations.pdf" />
+  </ItemGroup>
+
+</Project>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/ShowHideAnnotations.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ActiveDebugProfile>IIS Express</ActiveDebugProfile>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DebuggerFlavor>ProjectDebugger</DebuggerFlavor>
+  </PropertyGroup>
+</Project>

How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/appsettings.Development.json

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+{
+  "DetailedErrors": true,
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}