I have created a page using umbraco7, i have to inherit this page from some base class. This base class is used by all the pages of my legacy ASP.Net application. I have a code written in my legacy ASP.NET application in which all the ASP.Net pages are using this class as base class. 

I am using the user controls of this legacy based application in my umbraco pages as macro. As these user controls are imported from my legacy application and my new umbraco page is not inherited from the specifc base class i get "Object reference not set to instance of an object" error.

Can one please let me know if we can inherit umbraco pages from some base class?