Hello, Jan Oliver,
The main purpose of RadPageView is to layout pages of sub controls in different views.
If you want to have a single page without a tab (only the container), I believe that you wouldn't need to use a RadPageView at all. A better option is to use either a RadPanel or a RadScrollablePanel. Please give it a try and see whether it would fit your needs.
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Sr.
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