c# - unable to convert uploaded image to byte array -

i trying convert uploaded image byte array can store in database table.

the code below used perform conversion image byte array:

public byte[] converttobytes(httppostedfilebase image) {      binaryreader reader = new binaryreader(image.inputstream);      var imagebytes = reader.readbytes((int)image.contentlength);      return imagebytes; } 

when place breakpoints on code see being returned imagebytes variable displays {byte[0]}.

the code shown below receiving actionresult in controller view using upload image (currently using file input select , upload image):

[httppost] public actionresult newsmanager(newsmanagerviewmodel model) {     var newsmanagerrepository = new newsmanagerrepository();     var currentuser = user.identity.name;      if (modelstate.isvalid)     {         httppostedfilebase file = request.files["imagedata"];          var fileisimage = file.isimage();          if (fileisimage)         {             model.author = currentuser;              var newsuploaded = newsmanagerrepository.uploadnews(file, model);              if (newsuploaded == 1)             {                 return view();                 }                  modelstate.addmodelerror("uploadfailed", "news item not uploaded");                  return view(model);                 }                 modelstate.addmodelerror("filenotimage", "the file have uploaded not image");                  return view(model);             }              return view(model);         } 

does have ideas why images converting not being converted byte array?

any suggestions appreciated, application mvc 5 , .net version 4.5.

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the calling method code below:

public int uploadnews(httppostedfilebase file, newsmanagerviewmodel model) {     model.bannerimage = converttobytes(file);     var ndtms2utils = new ndtms2utilsentities();      var news = new news     {         title = model.title,         author = model.author,         bannerimage = model.bannerimage,         datecreated = datetime.now,         newscontent = model.newscontent     };      ndtms2utils.news.add(news);     int = ndtms2utils.savechanges();     if (i == 1)     {         return 1;     }     return 0; } 

use convert method mentioned below:

public byte[] converttobytes(httppostedfilebase image) {    return image.inputstream.streamtobytearray(); }  public static byte[] streamtobytearray(this stream input) {     input.position = 0;     using (var ms = new memorystream())     {         int length = system.convert.toint32(input.length);         input.copyto(ms, length);         return ms.toarray();     } }