c# - Validate file size before upload - IE8+ -


i want validate file size before upload on ie8+

i tried

validate file size before upload

but didn't work.

and can't configure every ie browser use "activexobject" (i saw 1 way solution).

what should do?

using asp.net fileupload control cannot use code validate size of file , inform user.

if want better user experience, suggest investigate open source solutions following:

  1. custom http module

    neatupload free option.

  2. silverlight/flash option

    swfupload free option.

  3. asynchronous chunking option

    radasyncupload - telerik's asp.net asyncupload pay option, check website pricing.


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