'function1' does not implement inherited abstract member 'function2'
A class is required to implement all the abstract members in the base class.
The following sample generates CS0534:
namespace x { abstract public class clx { public abstract void f(); } public class cly : clx // CS0534, no override for clx::f { // the following line is a sample override to resolve CS0534 // override public void f(){} public static int Main() { return 0; } } }