在另一个具有相同函数名称的抽象类中继承抽象类

Question

I have two abstract classes AbstractClass1 and AbstractClass2 that both should have the same method names Meth1 .

Now what if my AbstractClass1 inherits from AbstractClass2 . Currently it is throwing me a compile time error as "Hides Inherited Abstract Member" . Below is my code.

 abstract class AbstractClass1 : AbstractClass2
 {
    public abstract string Meth1();
 }

 abstract class AbstractClass2
 {
    public abstract string Meth1();
 }

Answer 1

You can use abstract override on derived class method to avoid compile time error.

abstract class BaseAbstract
{
    public abstract string Meth1();
}

abstract class ChildAbstract : BaseAbstract
{
    public abstract override string Meth1();
}

BUT please note that this is not quite right place to use abstract override . Usually abstract override is used when deriving an abstract class from non abstract class. to ensure that derived class implements the method. (see this )

Take a look at below code

class BaseNonAbstract
{
      public virtual string Meth1()
      {
         // do something
         return string.Empty;
      }
}
abstract class ChildAbstract : BaseNonAbstract
{
    public abstract override string Meth1();
}

Answer 2

Try this

abstract class AbstractClass1 : AbstractClass2
{
}


abstract class AbstractClass2
{
    public abstract string Meth1();
}