angular - Display PDF file from C# to Angular2 view -


i'm trying display pdf uploaded server. pdf resides inside app_data folder. want fetch using c# web api 2 , display in angular 2 frontend view.

c# code:

  httpresponsemessage response = request.createresponse(httpstatuscode.badrequest);   string filename = "somefilename.pdf";   byte[] buffer = new byte[0];   memorystream memstream = new memorystream();     if (filename != "") {     pdfreader reader = new pdfreader(path.combine(httpcontext.current.request.physicalapplicationpath) + "/app_data/uploads/pdfs/" + filename);     pdfstamper stamper = new pdfstamper(reader, memstream);      response = request.createresponse(httpstatuscode.ok);     buffer = memstream.toarray();     response.content = new streamcontent(new memorystream(buffer));     response.content.headers.contenttype = new mediatypeheadervalue("application/pdf");     response.content.headers.contentlength = buffer.length;     contentdispositionheadervalue contentdisposition = null;     if (contentdispositionheadervalue.tryparse("inline; filename=" + filename, out contentdisposition))     {       response.content.headers.contentdisposition = contentdisposition;     }   }    return response;

angular 2 code:

this.documentsservice.getfile()                 .subscribe((response: any) => {                     let file = new blob([response], { type: 'application/pdf' });                     let url = url.createobjecturl(file);                     window.open(url);                 });

i think angular code wrong. nevertheless, first goal here fetch mvc side. right file gets downloaded , it's corrupted or there's not fetch correctly. give me 15bytes size pdf file, know there's wrong. i'm using itextsharp in c# backend.

thanks in advance!

from comment (providing answer easier code):

if (filename != "") {     var fs = system.io.file.openread(filename);     _mydisposable = fs; // see further down in answer.     var response = request.createresponse(httpstatuscode.ok);     response.content = new streamcontent(fs);     response.content.headers.contenttype = new mediatypeheadervalue("application/pdf");     return response; }  return response;

edit: code posted above works me. problem disposing of stream. best way creating private idisposable member on controller class, , adding dispose override, sort of this:

private idisposable _mydisposable; public override void dispose(bool disposing) {     if (disposing && _mydisposable != null)         _mydisposable.dispose(); }

please note assumes asp.net done request (which seems reasonable, because it's disposing of controller), should correct.


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