I have a dialog with a few controls and datetimepicker. When I disable all component, except datetimepicker a datetimepicker select dialog appears. He get focus and select date triggers. How can I fix this problem? I want just to show text box with date.

You can make Id field readonly and add ui-state-disabled class so your field will have the same style as disabled field.
So when you open your dialog focus will be set on Id field.