Category / Section
How to Export Diagram to PDF?
2 mins read
EJMVC
Diagram can be exported as an image file (Jpeg, png, bmp, svg…), but there is no direct way to export as PDF. However, you can embed the exported image into a PDF file by using Essential PDF. Refer to the following PDF assemblies in the web.config file along with our Diagram assemblies.
PDFAssembly:
Syncfusion.Pdf.Base
DiagramAssembly:
Syncfusion.Core
Syncfusion.EJ
Syncfusion.EJ.MVC
The following namespace should be referred in the application along with the Diagram namespace.
Namespace
using Syncfusion.Pdf.Graphics; using Syncfusion.Pdf;
CSHTML
function GeneratePDF() {
var fileType = "png";
var fileName = "diagram";
var region = "content";
var diagram = $("#Diagram1").data("ejDiagram");
var image = diagram.exportDiagram({ mode: "data"});
$.ajax({
url: '/Diagram/createPDF',
type: "POST",
dataType: 'text',
data: { base64data: image },
success: function (data) {
window.open("../Images/" + data);
},
error: function (xhr) {
}
})
}
Controller
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult createPDF()
{
string filename = "sample.pdf";
string filepath = null;
if (Request.Form["base64data"] != null)
{
string image = Request.Form["base64data"].ToString();
image = image.Substring(image.IndexOf(',') + 1);
byte[] data = Convert.FromBase64String(image);
var path = Path.Combine(Server.MapPath("~/Images"), "snapshot.png");
// An image is generated.
System.IO.File.WriteAllBytes(path, data);
Thread t = new Thread(CreateDocument);
t.SetApartmentState(ApartmentState.STA);
t.Start();
t.Join();
filepath = Path.Combine(Server.MapPath("~/Images"), "sample.pdf");
//Saves the PDF document.
document.Save(filepath);
document.Close(true);
}
return Content(filename);
}
public void CreateDocument()
{
//Creates a PDF document.
PdfPage page = document.Pages.Add();
PdfGraphics graphics = page.Graphics;
string imgPath = ResolveApplicationImagePath("snapshot.png");
graphics.DrawImage(PdfImage.FromFile(imgPath), 100, 200, 300, 300);
}
protected string ResolveApplicationImagePath(string fileName)
{
string dataPath = new System.IO.DirectoryInfo(Request.PhysicalApplicationPath + "\\Images").FullName;
return string.Format("{0}\\{1}", dataPath, fileName);
}
Sample:http://www.syncfusion.com/downloads/support/directtrac/general/ze/PDFSample2006957137
