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How do I reference the fileuploader, trying to make msgbox appeaer if fileuploader hasnt been submitted

I currently use this when one of my dropdowns hasnt be selected. Now I need to be able to stop the user from submitting a request if the attachment hasnt been attached and the path is still visible in the uploader. I was going for an onlick if uploader is not blank then msgbox popup. The problem is I dont know how to reference the uploader. .Text .Value or another way? This is my attempt...

All help much appreciated

btnSubmit.Attributes.Add("onclick", "if(document.getElementById('FileUploadControl').text!='') {window.alert('Please submit your attachment before submitting request');return false;}");

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ASKER

well could i possibly create a text box that mirrors the text in the uploader and set the msgbox to react to whether that text box has text or not?

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ASKER

thats annoying, I thought it would have been a simple thing to do

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ASKER

not even FileUploadControl.HasFile. Im clutching at straws here

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ASKER

Thanks for your help Tim