Hi,

 

I have tested your website.

 

It seems that , the Page.PreRender event is not able to be catched by the uploader control.

 

 

Now I think maybe the control be added to the Page too late.

 

 

I suggest you to test this :

 

attach the OnInit,OnLoad,OnPreRender event of both the Page and the Uploader,

 

And output the event steps to a multiple TextBox , so I can understand what happends.

 

 

 

Regards,

Terry