ajaxfileupload OnUploadComplete event handler does not update server controls

I am using Master Page. I upgraded the aJaX control toolkit to 4.1.60623 (6 25 2012).
The OnUploadComplete event handler for ajaxfileupload does not update the server control on the page like label, textbox, neither could it modify the viewstate variable of the page. It seems to me that this server function does not do postback of any kind.
I want to run some server code snippet to receive the duration of the multimedia uploaded, that can not be done in Javascript. I found some tricks on the internet using the Javascript to trigger a postback:http: easily-refresh-an-updatepanel-using-javascript .
This could trigger the postback, and, using some hidden fields, I could manage to resolve the difficulty.
But I am admiring if there is some simpler way to let the OnUploadComplete event handler run the server code and update the server control directly
Posted On: Wednesday, November 7, 2012 Total Views: 265
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