javascript - upload file from client to server without openFile dialog

Question

i am trying to create an aspx page where i can directly upload a file from the client to the server without user intervention. I would like to do something like when the user specifies the file path in the url, that particular file must be uploaded to the server.

example: ht.tp://XXX.XXX.XXX.XXX/File_upload/File_Uploader.aspx?upload=C:/sample.csv&type=csv

The user can change the value after upload and what ever file he is specifying, it will be needed to be uploaded onto the server which is located at xxx.xxx.xxx.xxx

this is just a trial to check if the csv file is being created on the server or not, and it is not being created.

i just want to copy the file on the client side to the server side and it has to be only by the aspx page in the format specified above. if there is any other good way then please guide me. Thanks.

Answer 1

It's not possible to upload a file without user interaction. He has to do an explicit action: drag & drop or select a file with a dialog window.

This is because security reasons, imagine if a HTML page could upload to a remote server any file it wants, without the user has to select which one: it could upload user documents, settings, passwords or whatever it's accessible to the Windows user that run the browser. For the same reason even the value attribute often is ignored and not every browser handles the accept attribute too (you may, more or less, force a user to select the file you want before he can continue). For what I remember older versions of Firefox didn't even allow to programmatically click an input tag to upload files.