Partial declarations must not specify different base classes

Question

Guys I am new to WPF .

I have a wpf page named StandardsDefault. In the code behind, StandardsDefault is inheriting Page, l

Answer 1

Make sure other partial classes are not extending a different class.

public partial class CountryStandards : StandardsDefault

public partial class CountryStandards : Page

You have to make them extends same class.