Thanks a lot, it was very usefull. Now im having other problem. When i show the open dialog box so the user can pick a raster dataset i don't know how to use a filter that accept that kind of data.
The problem is because dataset are folders and i need that the user can select them as files.
I want to use the same "open file dialog" that exist in arcMap. I tried with ControlsAddDataCommand() but is different
thanks