Some Server side code to return PDF (Web Api).
[HttpGet]
[Route("documents/{docid}")]
public HttpResponseMessage Display(string docid) {
HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.BadRequest);
var documents = reader.GetDocument(docid);
if (documents != null && documents.Length == 1) {
var document = documents[0];
docid = document.docid;
byte[] buffer = new byte[0];
//generate pdf document
MemoryStream memoryStream = new MemoryStream();
MyPDFGenerator.New().PrintToStream(document, memoryStream);
//get buffer
buffer = memoryStream.ToArray();
//content length for use in header
var contentLength = buffer.Length;
//200
//successful
var statuscode = HttpStatusCode.OK;
response = Request.CreateResponse(statuscode);
response.Content = new StreamContent(new MemoryStream(buffer));
response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
response.Content.Headers.ContentLength = contentLength;
ContentDispositionHeaderValue contentDisposition = null;
if (ContentDispositionHeaderValue.TryParse("inline; filename=" + document.Name + ".pdf", out contentDisposition)) {
response.Content.Headers.ContentDisposition = contentDisposition;
}
} else {
var statuscode = HttpStatusCode.NotFound;
var message = String.Format("Unable to find resource. Resource \"{0}\" may not exist.", docid);
var responseData = responseDataFactory.CreateWithOnlyMetadata(statuscode, message);
response = Request.CreateResponse((HttpStatusCode)responseData.meta.code, responseData);
}
return response;
}
On my a View you could do something like this
<a href="https://stackoverflow.com/questions/36042614/api/documents/1234" target = "_blank" class = "btn btn-success" >View document</a>
which will call the web api and open the PDF document in a new tab in the browser.
Here is how i basically do the same thing but from a MVC controller
// NOTE: Original return type: FileContentResult, Changed to ActionResult to allow for error results
[Route("{docid}/Label")]
public ActionResult Label(Guid docid) {
var timestamp = DateTime.Now;
var shipment = objectFactory.Create<Document>();
if (docid!= Guid.Empty) {
var documents = reader.GetDocuments(docid);
if (documents.Length > 0)
document = documents[0];
MemoryStream memoryStream = new MemoryStream();
var printer = MyPDFGenerator.New();
printer.PrintToStream(document, memoryStream);
Response.AppendHeader("Content-Disposition", "inline; filename=" + timestamp.ToString("yyyyMMddHHmmss") + ".pdf");
return File(memoryStream.ToArray(), "application/pdf");
} else {
return this.RedirectToAction(c => c.Details(id));
}
}
return this.RedirectToAction(c => c.Index(null, null));
}
Hope this helps