Hi Ganesh,
We have prepared the sample based on your requirement. In that we have edited the style and added the textbox additionally to the tabstrip and binded the tab navigation item header to that text.
Also we have validated the tabnavigation button IsEnabled property by programmatically, in that we have taken the next button in code behind by using the find name method and validated based on type of radio button click event.
Please find the attached sample,
Regards,
Antony.
TabNavigation346653898_464705a5.zip