This sample demonstrate the following key features of PDF Viewer:
View the PDF document
Core interactions - Scrolling, Zooming, panning and page navigation
Built-in toolbar
Select and copy text from PDF file
Search a text easily across the PDF document
Easy navigation with the help of Bookmarks, thumbnails, hyperlinks and table of contents
View modes - fit to page and fit to width
Print the entire document or a specific page directly from the browser.
More information on the PDF Viewer instantiation can be found in this .
Source Code
You can download the source code for this project here.
Design-Time
The EJ2 PdfViewer control can be added to a Form or Page from the Visual Studio Toolbox. It should look like this when dropped onto the designer.
The design-time appearance of the EJ2 PdfViewer control will not show a PDF document. The logic for this should be implemented in your code (see below).
Sample Implementation
PdfViewer.cs
/// <summary>
/// PDF Viewer Server Side Configuration Example.
/// https://github.com/SyncfusionExamples/PdfViewer-Server/blob/master/src/ej2-pdfviewer-server/Controllers/PdfViewerController.cs.
/// </summary>
public partial class PDFViewer : TestBase
{
public PDFViewer()
{
InitializeComponent();
}
private void pdfViewer1_Appear(object sender, EventArgs e)
{
this.pdfViewer1.Instance.load("Wisej.pdf", null);
}
private void pdfViewer1_WebRequest(object sender, WebRequestEventArgs e)
{
// decode payload.
dynamic payload = null;
using (StreamReader reader = new StreamReader(e.Request.InputStream))
{
var text = reader.ReadToEnd();
payload = JsonConvert.DeserializeObject<Dictionary<string, string>>(text);
}
switch(payload["action"])
{
case "Load":
e.Response.Write(LoadPdf(payload));
break;
case "RenderPdfPages":
e.Response.Write(RenderPdfPages(payload));
break;
case "RenderPdfTexts":
e.Response.Write(RenderPdfTexts(payload));
break;
case "RenderThumbnailImages":
e.Response.Write(RenderThumbnailImages(payload));
break;
case "Download":
e.Response.Write(Download(payload));
break;
case "PrintImages":
e.Response.Write(PrintImages(payload));
break;
case "RenderAnnotationComments":
e.Response.Write(RenderAnnotationComments(payload));
break;
case "Unload":
e.Response.Write(PrintImages(payload));
break;
default:
break;
}
}
private string RenderPdfTexts(dynamic payload)
{
; var renderer = new PdfRenderer();
var result = renderer.GetDocumentText(payload);
return JsonConvert.SerializeObject(result);
}
private string LoadPdf(Dictionary<string, string> payload)
{
MemoryStream ms;
PdfRenderer renderer = new PdfRenderer();
bool isFileName = bool.Parse(payload["isFileName"]);
if (isFileName)
{
var path = Application.MapPath($"Data/PdfViewer/{payload["document"]}");
var bytes = File.ReadAllBytes(path);
ms = new MemoryStream(bytes);
}
else
{
var bytes = Convert.FromBase64String(payload["document"]);
ms = new MemoryStream(bytes);
}
var result = renderer.Load(ms, payload);
return JsonConvert.SerializeObject(result, Formatting.None);
}
private string RenderPdfPages(Dictionary<string, string> payload)
{
var renderer = new PdfRenderer();
var page = renderer.GetPage(payload);
return JsonConvert.SerializeObject(page);
}
private string RenderThumbnailImages(Dictionary<string, string> payload)
{
var renderer = new PdfRenderer();
var result = renderer.GetThumbnailImages(payload);
return JsonConvert.SerializeObject(result);
}
private string Download(Dictionary<string, string> payload)
{
var renderer = new PdfRenderer();
return renderer.GetDocumentAsBase64(payload);
}
private string PrintImages(Dictionary<string, string> payload)
{
var renderer = new PdfRenderer();
var result = renderer.GetPrintImage(payload);
return JsonConvert.SerializeObject(result);
}
private string Unload(Dictionary<string, string> payload)
{
var renderer = new PdfRenderer();
renderer.ClearCache(payload);
return "Cleared Cache.";
}
private string RenderAnnotationComments(Dictionary<string, string> payload)
{
var renderer = new PdfRenderer();
var result = renderer.GetAnnotationComments(payload);
return JsonConvert.SerializeObject(result);
}
private void button1_Click(object sender, EventArgs e)
{
this.pdfViewer1.Instance.load("Annotations.pdf", null);
}
Runtime
The resulting EJ2 PdfViewer control will look something like this:
