![]() Internal – access is limited exclusively to the classes defined by the current project. Protected – access is limited to within class definition and any class that inherits from the course. Private – limited access within a class definition if none is specified, then this is the default. Public – No restrictions on accessing public members. ![]() In C#, there are 5 several types of Access Modifiers. What is an accessibility modifier, and how many are there in C#?Īccess modifiers are keywords used to specify the declared accessibility of a member or a type. This first part covers advanced C# OOP Interview Questions and answers 6. Part 2 – C# OOP Interview Questions (Advanced) In that case, we can’t implement their body independently in the same class because of the same name and same signature, so we must use the interface name before the method name to remove this method confusion.Ĭonsole.WriteLine("For testInterface1 !!") Ĭonsole.WriteLine("For testInterface2 !!") Imagine that the same class contains methods that are in conflict. These are some of the typical C# OOP interview questions. What would happen in case if the inherited interfaces have conflicting method names? public class DrawingĬonsole.WriteLine("Area :" + square.Area()) Ĭonsole.WriteLine("Area :" + rectangle.Area()) Method overriding is an example of dynamic polymorphism. Here, the method name and the method signature (the number of parameters and parameter type must be the same and may have a different implementation). public class TestDataĪnother name for dynamic or runtime polymorphism is late binding. Because of this, we can perform different-different tasks with the same method name in the same class, also known as Method overloading. In Compile time polymorphism or Early Binding, we will use multiple methods with the same name but a different parameter type or several parameters. What is the difference between late binding and early binding? Let us move on to the following C# OOP Interview Questions. A delegate object can have many functions reference, also known as Invocation List, that refer to tasks in a sequence FIFO we can new functions ref in this list at runtime by a += operator and remove by -= operator. The connection can be changed at runtime, which is owned by an object of a delegate. A class can implement any number of interfaces, but a subclass can, at most, use only one abstract class.Ī delegate Object is a reference-type variable that holds the reference to a method.An abstract class uses a constructor, while we don’t have any constructor in an interface.In an abstract class, all data members or functions are private by default, while in an interface, all are public we can’t change them manually. ![]() An abstract class can declare or use variables, while an interface cannot.An abstract class can have non-abstract methods (concrete methods), while in the interface case, all the forms must be abstract. ![]() What is the difference between Interface and Abstract Class? Though every interview is different and the job scope is also different, we can help you with the top C# OOP Interview Questions with answers, which will help you take the leap and get you success in your interview.ġ. If you are looking for a job related to C# OOP, you must prepare for the 2023 C# OOP Interview Questions. Developers can use various cross-platform tools to create applications in C# that can be used on mobile and desktop platforms. It is a complex language to learn, and mastering it can take a substantial amount of time. A statically-typed language thoroughly checks the written source code before it becomes an application. So, it is an excellent choice for any programmer who wishes to develop web and games. Web development can also be done efficiently with C#, which has increasingly become popular for mobile development. It has been used to create various applications it is specifically strong at building Windows desktop applications and games. Updated JIntroduction to C# OOP Interview QuestionsĬ# is an Object-Oriented, functional, generic, and component-oriented programming language.
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