Compiler Error CS1722

Base class 'class' must come before any interfaces

When specifying a class to inherit from and interfaces to implement, the class name must be specified first.


The following sample generates CS1722.

// CS1722.cs  
// compile with: /target:library  
public class A {}  
interface I {}  
public class MyClass : I, A {}   // CS1722  
public class MyClass2 : A, I {}   // OK