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Merge pull request #50 from SyncfusionExamples/EJ2-845073-shAnnot
845073: Sample to show and Hide Annotations
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‎How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations.sln

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

‎How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/NuGet.Config

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

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

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

‎How to/Show and Hide Annotations/ShowHideAnnotations/ShowHideAnnotations/Pages/Error.cshtml.cs

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

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

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@page "{handler?}"
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@using ShowHideAnnotations.Pages
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@model IndexModel
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@{
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ViewData["Title"] = "Home page";
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}
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<div class="text-center">
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<button id="hideBtn">Hide Annotations</button>
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<button id="unhideBtn">Show Annotations</button>
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<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">
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</ejs-pdfviewer>
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</div>
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<script type="text/javascript">
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var exportObject = null;
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document.addEventListener('DOMContentLoaded', function() {
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var pdfviewer = document.getElementById('pdfviewer').ej2_instances[0];
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function HideAnnotations() {
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pdfviewer.exportAnnotationsAsObject().then(function(value) {
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exportObject = value;
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pdfviewer.deleteAnnotations();
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});
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}
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function UnHideAnnotations() {
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if (exportObject) {
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pdfviewer.importAnnotation(JSON.parse(exportObject));
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}
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}
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document.getElementById('hideBtn').addEventListener('click', HideAnnotations);
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document.getElementById('unhideBtn').addEventListener('click', UnHideAnnotations);
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});
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</script>

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

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

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

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@page
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@model PrivacyModel
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@{
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ViewData["Title"] = "Privacy Policy";
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}
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<h1>@ViewData["Title"]</h1>
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<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;
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using Microsoft.AspNetCore.Mvc.RazorPages;
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namespace PDFViewerSample.Pages
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{
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public class PrivacyModel : PageModel
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{
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private readonly ILogger<PrivacyModel> _logger;
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public PrivacyModel(ILogger<PrivacyModel> logger)
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{
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_logger = logger;
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}
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public void OnGet()
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{
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}
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}
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}

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

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>@ViewData["Title"] - PDFViewerSample</title>
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<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
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<link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
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<link rel="stylesheet" href="~/PDFViewerSample.styles.css" asp-append-version="true" />
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<!-- Syncfusion ASP.NET Core controls styles -->
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<link rel="stylesheet" href="https://cdn.syncfusion.com/ej2/30.1.37/fluent.css" />
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<!-- Syncfusion ASP.NET Core controls scripts -->
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<script src="https://cdn.syncfusion.com/ej2/30.1.37/dist/ej2.min.js"></script>
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</head>
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<body>
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<div class="container">
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<main role="main" class="pb-3">
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@RenderBody()
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</main>
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</div>
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<script src="~/lib/jquery/dist/jquery.min.js"></script>
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<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
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<script src="~/js/site.js" asp-append-version="true"></script>
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@await RenderSectionAsync("Scripts", required: false)
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<!-- Syncfusion ASP.NET Core Script Manager -->
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<ejs-scripts></ejs-scripts>
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</body>
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</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
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for details on configuring this project to bundle and minify static web assets. */
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a.navbar-brand {
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white-space: normal;
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text-align: center;
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word-break: break-all;
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}
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a {
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color: #0077cc;
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}
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.btn-primary {
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color: #fff;
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background-color: #1b6ec2;
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border-color: #1861ac;
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}
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.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
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color: #fff;
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background-color: #1b6ec2;
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border-color: #1861ac;
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}
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.border-top {
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border-top: 1px solid #e5e5e5;
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}
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.border-bottom {
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border-bottom: 1px solid #e5e5e5;
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}
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.box-shadow {
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box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
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}
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button.accept-policy {
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font-size: 1rem;
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line-height: inherit;
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}
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.footer {
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position: absolute;
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bottom: 0;
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width: 100%;
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white-space: nowrap;
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line-height: 60px;
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}

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