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PdfExporting

The client-side PdfExporting event is raised when RadClientExportManager is about to export a PDF document. You can handle this event in case you want to prevent the export. This article shows how to use this event in order to send the file content to the server, save it there and cancel the further execution of the export (See Example 1). For your reference you can find the API controller implementation as well (See Example 2).

To handle this event, simply write a JavaScript function that can be called when the event occurs. Then assign the name of this function as the value of the the OnClientPdfExporting property.

The client-side PdfExporting event handler receives two arguments:

Sender—the RadClientExportManager object that fired the event.
Event arguments — a ClientExportManagerPdfExportingEventArgs object that exposes the following methods:

ClientExportManagerPdfExportingEventArgs Object

Name	Parameters	Return Type	Description
get_cancel()		bool	Gets a value that indicates whether the event is canceled.
get_dataURI()		String	Returns the PDF document dataURI.
set_cancel(value)	bool		Sets whether the event will be canceled (if true is passed).

Example 1: Send the PDF to the server and prevent the client-side export.

ASPNET

<telerik:RadClientExportManager runat="server" ID="RadClientExportManager1" OnClientPdfExporting="OnClientPdfExporting">
	<PdfSettings FileName="MyFile.pdf" />
</telerik:RadClientExportManager>

<input type="button" onclick="exportElement()" value="export" />

JavaScript

var $ = $telerik.$;

function OnClientPdfExporting(sender, args) {
	var dataRaw = args.get_dataURI().split(',');

	var data = { contentType: dataRaw[0].split(';')[0].split(':')[1], fileName: "test 1.pdf", base64: dataRaw[1] };

	$.ajax({
		type: "POST",
		data: data,
		url: "api/export/file",
		success: success
	});

	args.set_cancel(true);
}

function success() {
	$find("FileExplorer1").refresh();
}

function exportElement() {
	var exp = $find("<%= RadClientExportManager1.ClientID %>");

	exp.exportPDF($telerik.$("#foo"));
}

Example 2: Save a PDF sent from the client to a folder on the server.

C#
public class ExportController : ApiController
{
	[HttpPost]
	public HttpResponseMessage File(FormDataCollection values)
	{
		var contentType = values.Get("contentType");
		var base64 = values.Get("base64");
		var fileName = values.Get("fileName");

		var fileContents = Convert.FromBase64String(base64);


		System.IO.File.WriteAllBytes(System.Web.Hosting.HostingEnvironment.MapPath("~/files") + "\\" + Guid.NewGuid() + "_" + fileName, Convert.FromBase64String(base64));

		var response = new HttpResponseMessage();
		response.StatusCode = HttpStatusCode.OK;

		return response;
	}
}
VB.NET
Public Class ExportController
	Inherits ApiController
	<HttpPost> _
	Public Function File(values As FormDataCollection) As HttpResponseMessage
		Dim contentType = values.[Get]("contentType")
		Dim base64 = values.[Get]("base64")
		Dim fileName = values.[Get]("fileName")

		Dim fileContents = Convert.FromBase64String(base64)


		System.IO.File.WriteAllBytes(System.Web.Hosting.HostingEnvironment.MapPath("~/files") + "\" + Guid.NewGuid().ToString() + "_" + fileName, Convert.FromBase64String(base64))



		Dim response = New HttpResponseMessage()
		response.StatusCode = HttpStatusCode.OK


		Return response
	End Function
End Class
#End Region

PdfExporting

See Also