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‎Save and Load/Load PDF file from URL/Web Service/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"] - PdfViewerWebService</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="~/PdfViewerWebService.styles.css" asp-append-version="true" />
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</head>
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<body>
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<header>
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<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
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<div class="container">
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<a class="navbar-brand" asp-area="" asp-page="/Index">PdfViewerWebService</a>
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<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
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aria-expanded="false" aria-label="Toggle navigation">
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<span class="navbar-toggler-icon"></span>
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</button>
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<div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
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<ul class="navbar-nav flex-grow-1">
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<li class="nav-item">
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<a class="nav-link text-dark" asp-area="" asp-page="/Index">Home</a>
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</li>
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<li class="nav-item">
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<a class="nav-link text-dark" asp-area="" asp-page="/Privacy">Privacy</a>
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</li>
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</ul>
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</div>
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</div>
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</nav>
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</header>
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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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<footer class="border-top footer text-muted">
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<div class="container">
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&copy; 2023 - PdfViewerWebService - <a asp-area="" asp-page="/Privacy">Privacy</a>
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</div>
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</footer>
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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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</body>
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</html>

‎Save and Load/Load PDF file from URL/Web Service/Pages/Shared/_Layout.cshtml.css‎

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/* Please see documentation at https://docs.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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}

‎Save and Load/Load PDF file from URL/Web Service/Pages/Shared/_ValidationScriptsPartial.cshtml‎

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

‎Save and Load/Load PDF file from URL/Web Service/PdfViewerController.cs‎

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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Caching.Memory;
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using Newtonsoft.Json;
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using Syncfusion.EJ2.PdfViewer;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Net;
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namespace PdfViewerWebService
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{
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[Route("[controller]")]
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[ApiController]
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public class PdfViewerController : ControllerBase
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{
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private IWebHostEnvironment _hostingEnvironment;
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        //Initialize the memory cache object  
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        public IMemoryCache _cache;
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public PdfViewerController(IWebHostEnvironment hostingEnvironment, IMemoryCache cache)
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{
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_hostingEnvironment = hostingEnvironment;
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_cache = cache;
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Console.WriteLine("PdfViewerController initialized");
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}
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[HttpPost("Load")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/Load")]
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        //Post action for Loading the PDF documents  
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        public IActionResult Load([FromBody] Dictionary<string, string> jsonObject)
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{
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Console.WriteLine("Load called");
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//Initialize the PDF viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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MemoryStream stream = new MemoryStream();
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object jsonResult = new object();
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if (jsonObject != null && jsonObject.ContainsKey("document"))
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{
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if (bool.Parse(jsonObject["isFileName"]))
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{
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string documentPath = GetDocumentPath(jsonObject["document"]);
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if (!string.IsNullOrEmpty(documentPath))
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{
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byte[] bytes = System.IO.File.ReadAllBytes(documentPath);
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stream = new MemoryStream(bytes);
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}
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else
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{
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string fileName = jsonObject["document"].Split(new string[] { "://" }, StringSplitOptions.None)[0];
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if (fileName == "http" || fileName == "https")
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{
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WebClient WebClient = new WebClient();
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byte[] pdfDoc = WebClient.DownloadData(jsonObject["document"]);
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stream = new MemoryStream(pdfDoc);
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}
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else
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{
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return this.Content(jsonObject["document"] + " is not found");
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}
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}
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}
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else
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{
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byte[] bytes = Convert.FromBase64String(jsonObject["document"]);
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stream = new MemoryStream(bytes);
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}
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}
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jsonResult = pdfviewer.Load(stream, jsonObject);
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return Content(JsonConvert.SerializeObject(jsonResult));
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}
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[AcceptVerbs("Post")]
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[HttpPost("Bookmarks")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/Bookmarks")]
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        //Post action for processing the bookmarks from the PDF documents
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        public IActionResult Bookmarks([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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var jsonResult = pdfviewer.GetBookmarks(jsonObject);
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return Content(JsonConvert.SerializeObject(jsonResult));
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}
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[AcceptVerbs("Post")]
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[HttpPost("RenderPdfPages")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/RenderPdfPages")]
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        //Post action for processing the PDF documents 
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        public IActionResult RenderPdfPages([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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object jsonResult = pdfviewer.GetPage(jsonObject);
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return Content(JsonConvert.SerializeObject(jsonResult));
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}
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[AcceptVerbs("Post")]
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[HttpPost("RenderPdfTexts")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/RenderPdfTexts")]
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        //Post action for processing the PDF texts 
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        public IActionResult RenderPdfTexts([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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object jsonResult = pdfviewer.GetDocumentText(jsonObject);
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return Content(JsonConvert.SerializeObject(jsonResult));
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}
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[AcceptVerbs("Post")]
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[HttpPost("RenderThumbnailImages")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/RenderThumbnailImages")]
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        //Post action for rendering the ThumbnailImages
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        public IActionResult RenderThumbnailImages([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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object result = pdfviewer.GetThumbnailImages(jsonObject);
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return Content(JsonConvert.SerializeObject(result));
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}
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[AcceptVerbs("Post")]
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[HttpPost("RenderAnnotationComments")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/RenderAnnotationComments")]
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        //Post action for rendering the annotations
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        public IActionResult RenderAnnotationComments([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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object jsonResult = pdfviewer.GetAnnotationComments(jsonObject);
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return Content(JsonConvert.SerializeObject(jsonResult));
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}
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[AcceptVerbs("Post")]
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[HttpPost("ExportAnnotations")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/ExportAnnotations")]
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        //Post action to export annotations
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        public IActionResult ExportAnnotations([FromBody] Dictionary<string, string> jsonObject)
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{
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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string jsonResult = pdfviewer.ExportAnnotation(jsonObject);
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return Content(jsonResult);
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}
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[AcceptVerbs("Post")]
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[HttpPost("ImportAnnotations")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/ImportAnnotations")]
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        //Post action to import annotations
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        public IActionResult ImportAnnotations([FromBody] Dictionary<string, string> jsonObject)
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{
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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string jsonResult = string.Empty;
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object JsonResult;
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if (jsonObject != null && jsonObject.ContainsKey("fileName"))
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{
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string documentPath = GetDocumentPath(jsonObject["fileName"]);
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if (!string.IsNullOrEmpty(documentPath))
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{
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jsonResult = System.IO.File.ReadAllText(documentPath);
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}
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else
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{
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return this.Content(jsonObject["document"] + " is not found");
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}
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}
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else
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{
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string extension = Path.GetExtension(jsonObject["importedData"]);
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if (extension != ".xfdf")
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{
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JsonResult = pdfviewer.ImportAnnotation(jsonObject);
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return Content(JsonConvert.SerializeObject(JsonResult));
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}
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else
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{
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string documentPath = GetDocumentPath(jsonObject["importedData"]);
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if (!string.IsNullOrEmpty(documentPath))
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{
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byte[] bytes = System.IO.File.ReadAllBytes(documentPath);
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jsonObject["importedData"] = Convert.ToBase64String(bytes);
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JsonResult = pdfviewer.ImportAnnotation(jsonObject);
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return Content(JsonConvert.SerializeObject(JsonResult));
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}
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else
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{
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return this.Content(jsonObject["document"] + " is not found");
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}
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}
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}
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return Content(jsonResult);
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}
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[AcceptVerbs("Post")]
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[HttpPost("ExportFormFields")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/ExportFormFields")]
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public IActionResult ExportFormFields([FromBody] Dictionary<string, string> jsonObject)
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{
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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string jsonResult = pdfviewer.ExportFormFields(jsonObject);
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return Content(jsonResult);
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}
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[AcceptVerbs("Post")]
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[HttpPost("ImportFormFields")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/ImportFormFields")]
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public IActionResult ImportFormFields([FromBody] Dictionary<string, string> jsonObject)
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{
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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jsonObject["data"] = GetDocumentPath(jsonObject["data"]);
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object jsonResult = pdfviewer.ImportFormFields(jsonObject);
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return Content(JsonConvert.SerializeObject(jsonResult));
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}
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[AcceptVerbs("Post")]
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[HttpPost("Unload")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/Unload")]
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        //Post action for unloading and disposing the PDF document resources 
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        public IActionResult Unload([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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pdfviewer.ClearCache(jsonObject);
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return this.Content("Document cache is cleared");
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}
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[HttpPost("Download")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/Download")]
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        //Post action for downloading the PDF documents
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        public IActionResult Download([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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string documentBase = pdfviewer.GetDocumentAsBase64(jsonObject);
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return Content(documentBase);
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}
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[HttpPost("PrintImages")]
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[Microsoft.AspNetCore.Cors.EnableCors("MyPolicy")]
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[Route("[controller]/PrintImages")]
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        //Post action for printing the PDF documents
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        public IActionResult PrintImages([FromBody] Dictionary<string, string> jsonObject)
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{
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//Initialize the PDF Viewer object with memory cache object
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PdfRenderer pdfviewer = new PdfRenderer(_cache);
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object pageImage = pdfviewer.GetPrintImage(jsonObject);
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return Content(JsonConvert.SerializeObject(pageImage));
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}
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//Gets the path of the PDF document
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private string GetDocumentPath(string document)
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{
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string documentPath = string.Empty;
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if (!System.IO.File.Exists(document))
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{
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var path = _hostingEnvironment.ContentRootPath;
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if (System.IO.File.Exists(path + "/Data/" + document))
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documentPath = path + "/Data/" + document;
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}
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else
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{
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documentPath = document;
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}
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Console.WriteLine(documentPath);
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return documentPath;
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}
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// GET api/values
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[HttpGet]
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public IEnumerable<string> Get()
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{
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return new string[] { "value1", "value2" };
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}
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// GET api/values/5
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[HttpGet("{id}")]
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public string Get(int id)
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{
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return "value";
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}
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}
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}

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