We are in the process of adding missing features and integrating our new control RadFileExplorer into the RadEditor. All file browsers dialogs are currently being reworked to use RadFileExplorer. We are working on adding drag/drop between treeview and grid, as well as to integrate the upload panel in the RadFileExplorer.
You can find several RadFileExplorer demos here:
Hence, our suggestion is to wait until the new editor comes out in Q1 2009 because it will feature completely redesigned (file) dialogs.
the Telerik team
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