tags:

views:

1371

answers:

2
+1  Q: 

Why AsyncFileUpload enforces a Postback?

Hi,

I'm AjaxControlToolkit's AsyncFileUpload control to upload files to server. It is placed in an UpdatePanel but when someone uploads a new file, a post back occurs. Why a post back occurs while I've put AsyncFileUpload in UpdatePanel?

I've used sample form here and here.

+1  A: 

File uploading is not supported in an async postback. Please refer to this blog post for the reasons why it doesn't work as well as workarounds for it:

Why don't file uploads work during async postbacks?

Eilon  2010-01-17 05:35:34

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