Tested I copy exactly the code you give me and still not working the postback, removing the MaintainScrollPositionOnPostback work normal.

Hi,   When the html window unload , the upload can't persist the browsed files.   I suggest you use AJAX to switch the content , instead of switching a page.   AjaxUploader support continue upload progress while the page doing AJAX postback.   Regards, Terry

>>In the referenced demo, is the image being loaded from the clients system without a postback?   Yes.   >>Is there source code available for this demo?   Yes.   Please check the following projects:   AdvancedCS20-MicrosoftAjax   AdvancedCS20 ...

I'm actually finding that multiple controls do slow down the page. It seems that each control causes a postback to the server, individually to the page. You can see this on your test page. where each control results in another postback to the server. why would this be ?

Please check the following thread:   http://cutesoft.net/forums/thread/64556.aspx

Incidentally, I am doing all of this coding in the CEHtmlEditorProvider.vb code

TML,   We are investigating this issue.   Can you create an example aspx page showing the problem and send it to kenneth@cutesoft.net?

Yevgeniy,   Can you put your JavaScript together, create an example aspx which can demonstrate the problem and send it to me?    

I get some problem with ShowFrameBrowseButton. Actually, it works fine at the first load of the page. But if I click the Browse button and select a file, once the file has been uploaded it behaves as if ShowFrameBrowseButton was set to false. Same occurs after an async postback of the page.

After all this writing, never mind, found code that was written by another team member that cleaned up abandoned images and it was cleaning up my uploaded images on postback.