WPF: How to populate Tabitem content based on combo selected value

Question

Hi,

I have two user controls in one Main tab. (Using WPF and C#)
-> first user control consists of one Combo Box and some other elements like TextBoxes.
-> Second user Controls consists of ChildTabControl with  5 tabs.

the content inside the second childTabItem is dynamic (Which will generate textbox, combobox, listbox, etc.) based on selected item in combobox(this is in first user control).

Please suggest me or share your knoweledge to complete this

regards
R.J