c# - Uploading files by dropzone.js give error, Request format is invalid: multipart/form-data; -

i using dropzone being able upload multiple files webservice, keep on getting error:

system.invalidoperationexception: request format invalid: multipart/form-data;      boundary=----------wmbuh1mgt5uyai5sek0qnm. @ system.web.services.protocols.httpserverprotocol.readparameters() @ system.web.services.protocols.webservicehandler.coreprocessrequest() 

this c# function

 public bool invoketest(byte[] binaryarray, string docname) 

as trying avoid page_load , try make work without form submit , jquery function as:

$('#dropzone').dropzone({         url: '_upload/uploader.asmx/invoketest',         enctype: 'multipart/form-data',         maxfilesize: 1,         paramname: 'photos',         addremovelinks: true,         enqueueforupload: false,     }); 

my form submit looks simple:

<form id="form1" action="_upload/uploader.asmx/invoketest" method="post" enctype="multipart/form-data" runat="server" class="dropzone"> 

my questions: possible use dropzone without "form" , post direct through jquery , avoid nasty error on webservice....

looking forward idea's , or suggestions,

thanks

dropzone.js work in conjunction webservice & more specifically, can used in scenarios, where

• you using form post webserviceurl
• you looking upload multiple images

, which, judging question, looking do.

here detailed example of such scenario. although in example servicestack (rather wcf) being used webservice: [ uploading images using servicestack , dropzone ]

this suggests webservice c# function not set correctly handle post request.

another important dropzone configuration use paralleluploads = 1. have seen being issue if multiple uploads looking access same memorystream on server-side implementation.

$('#dropzone').dropzone( {             paralleluploads: 1,             uploadmultiple: true,             autoprocessqueue: true         });