Reset Persisted Document Server-Side

[Kevin Neumann]

We have a page with a grid-details format. Grid at the top, each row with a Select button and a detail form below the grid. When you select a row, the details are loaded below.  The page also has a btnSave and btnAddNew. Each record has some detail fields as well as a document field.  In the details area, there is a dropdown list that causes a postback, so we set the PostbackTrigger of the document control is currently set to "btnSave" so that if the user selects a document and then toggles the dropdown, the uploaded document won't be lost. However, the problem is that if a user uploads a document and then realizes they are in the wrong record, if the select a new record from the grid, the document field still maintains the previously uploaded document.  

What we need is a way to force a reset of the dropdown control on the server-side? Is that possible?

[Plamen]

Hello Kevin,

 
The scenario described is quire complicated and quite clear so would you please let us know if it can be reproduced somehow on this on-line demo or what code should be added so we could reproduce it locally. 

Regards,
Plamen
Telerik