What is base class for Application Pages?

Question

What is base class for Application Pages in SharePoint?

Rajkiran Swain · Answer

Application pages have two specific derived base classes: 1:UnsecuredLayoutsPageBase class 2:LayoutsPageBase class These two base types are defined in the Microsoft.SharePoint.WebControls namespace. The LayoutsPageBase inherits from the UnsecuredLayoutsPageBase and the main difference between the two is that the LayoutsPageBase has built-in logic for checking permissions. The UnsecuredLayoutsPageBase has a set of overridable methods and properties that for example allows you to configure whether the application page permits anonymous users. All custom applications should derive from one of these two base types and typically LayoutsPageBase is used.