Hi,
Any UI/ViewState changes in FileValidating will be ignored.
You can throw an exception in that event handler, and use javascript to catch it :
function CuteWebUI_AjaxUploader_OnError(msg)
{
return false;//hide the default alert
}
function CuteWebUI_AjaxUploader_OnTaskError(obj,msg,reason)
{
//obj.FileName,obj...
}
Regards,
Terry