Answer / chandra prakash

The most important technical distinction between creating a derived class and implementing an interface is that a derived class can only inherit from one base class, but a class can implement any number of interfaces.

Answer / waqas ahmed

In C++, multiple class inheritance was allowed but in C# it
is not. The alternate for multiple inheritance is the use of
interface, it works like a pure abstract class (having
methods prototype only and have to be implemented by the
class that is inheriting the interface)

Explain login controls.

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