onUploadComplete event of asyncFileUpload

how to display a btn after onUploadComplete event is executed? It's not coming now even I say btn.visible=true inside that event..

I read in one of the thread that this event h开发者_StackOverflow社区appens asynchronously so we have to write javascript for it and call onClientUploadCompete.

But do anyone know how to do it withoiut writing javascript? please its urgent thanx in advance!

You've got two options - to execute client-side using JavaScript and AsyncFileUpload's OnClientUploadError and OnClientUploadComplete, or to handle the server-side UploadedComplete or UploadedFileError events fired by your AsyncFileUpload object.

If you choose client side, you can still include your Button as normal and include CSS for it to be display: none, which can be then altered in the JavaScript with something like the following:

$get(<%= AsyncFileUploaderInstanceName.ClientId %>).style.display = "block"

If you choose server side, you'll be able to refer to the .Visible property of whatever controls you like, and can alter them then. However, you'll have to update whatever UpdatePanel the button would be sitting in for the button to be rendered on the page.