What are Sealed Classes in C#?

What are Sealed Classes in C#?
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1 Answer

Answer :

The sealed modifier is used to prevent derivation from a class
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Related questions

Is .NET C# supports Multiple inheritance?

Description : Is .NET C# supports Multiple inheritance?

Last Answer : Multiple inheritance of classes is not allowed in C#. but In C# you can implements more than one interface, thus multiple inheritance is achieved through interface

Define what are sealed classes in c#?

Description : Define what are sealed classes in c#?

Last Answer : The sealed modifier is used to prevent derivation from a class. A compile-time error occurs if a sealed class is specified as the base class of another class.

Define what are sealed classes in C#?

Description : Define what are sealed classes in C#?

Last Answer : The sealed modifier is used to prevent derivation from a class. A compile-time error occurs if a sealed class is specified as the base class of another class.

What is Interface?

Description : What is Interface?

Last Answer : An Interface is a group of constants and method declaration interface like classes, define a set of properties, methods, and events. But unlike classes, interfaces do not provide implementation

How many types of Access Modifiers?

Description : How many types of Access Modifiers?

Last Answer : Public – Allows the members to be globally accessible. Private – Limits the member’s access to only the containing type. Protected – Limits the member’s access to the containing type and all classes derived from the containing type. Internal – Limits the member’s access to within the current project

Whait is Method overriding?

Description : Whait is Method overriding?

Last Answer : Method overriding occurs when child class declares a method that has the same type arguments as a method declared by one of its superclass. By declaring base class function as virtual, we allow the function to be overridden in any of derived class

What is a Method Overloading?

Description : What is a Method Overloading?

Last Answer : Method with same name but with different arguments is called method overloading

What is Polymorphism?

Description : What is Polymorphism?

Last Answer : Polymorphism means same operation may behave differently on different classes. Example : 1. Method Overloading and Method Overriding

Can you allow a class to be inherited, but prevent the method from being overridden?

Description : Can you allow a class to be inherited, but prevent the method from being overridden?

Last Answer : Yes. Just leave the class public and make the method sealed

Can you prevent your class from being inherited by another class?

Description : Can you prevent your class from being inherited by another class?

Last Answer : Yes. The keyword “sealed” will prevent the class from being inherited.

What is an Inheritance?

Description : What is an Inheritance?

Last Answer : The process of sub-classing a class to extend its functionality is called Inheritance. Advantage : It provides idea of reusability.

What is ref keyword & out keyword?

Description : What is ref keyword & out keyword?

Last Answer : Refrence Variable “must” be initialized before it is passed into a method.

What is Value Type and Reference Type?

Description : What is Value Type and Reference Type?

Last Answer : A variable is value type or reference type is solely determined by its data type. Ex: int, float, char, decimal, bool, decimal, struct, etc are value types As name suggest Reference Type stores reference to the ... ; Y = X; Console.writeline(Y.value); Y.value = 50; Console.writeline(X.value);

What is Enumeration?

Description : What is Enumeration?

Last Answer : Enumeration improves code readability. It also helps in avoiding typing mistake

What is a Garbage collection?

Description : What is a Garbage collection?

Last Answer : Garbage collection is the mechanism that reclaims the memory resources of an object when it is no longer referenced by a variable. And Net Runtime performs automatically performs garbage collection

What is the difference between the destructor and the Finalize() method? When does the Finalize() method get called?

Description : What is the difference between the destructor and the Finalize() method? When does the Finalize() method get called?

Last Answer : Finalize() corresponds to the .Net Framework and is part of the System.Object class. Destructors are C#'s implementation of the Finalize() method. The functionality of both Finalize() and the destructor is the same

What is Destructor?

Description : What is Destructor?

Last Answer : A destructor is just opposite to constructor. it has same as the class name, but with prefix ~ (tilde). They do not have return types

What is Finalize() Method of Object class?

Description : What is Finalize() Method of Object class?

Last Answer : Each class in C# is automatically (implicitly) inherited from the Object class which contains a method Finalize(). This method is guaranteed to be called when your object is garbage collected

What is Static Constructor?

Description : What is Static Constructor?

Last Answer : In C# it is possible to write a static no-parameter constructor for a class. Such a class is executed once, when first object of class is created. Class MyClass { static MyClass() { //Initialization Code for static fields and properties. } }

What is Static Method of the class?

Description : What is Static Method of the class?

Last Answer : Methods that you can call directly without first creating an instance of a class. 1. As static methods may be called without any reference to object

What is static member of a calss?

Description : What is static member of a calss?

Last Answer : Static members belong to the whole class rather than to individual object Static members are accessed with the name of class rather than reference to objects

What is Constructor?

Description : What is Constructor?

Last Answer : A constructor is a special method whose task is to initialize the object of its class. 1. It is special because its name is the same as the class name 2. They do not have return ... can call the base class constructor 4. Constructor is invoked whenever an object of its associated class is created

Whar are properties?

Description : Whar are properties?

Last Answer : Attribute of object is called properties Example:- A car has color as property.

What is an encapsulation?

Description : What is an encapsulation?

Last Answer : Wrapping up of data and function into a single unit is known as Encapsulation.

What is an Object?

Description : What is an Object?

Last Answer : Instance of Class is called object. An object is created in memory using keyword “new”.

What is a Class?

Description : What is a Class?

Last Answer : A user-defined data structure that groups properties and methods. Class doesn’t occupies memory.

Give an example of using a sealed class in C#?

Description : Give an example of using a sealed class in C#?

Last Answer : Below is the sample code of sealed class in C# - class X {} sealed class Y : X {} Sealed methods - class A { protected virtual void First() { } protected virtual void Second() { } } ... inherits from class B then method - First will not be overridable as this method is sealed in class B.

Explain sealed class in C#?

Description : Explain sealed class in C#?

Last Answer : A sealed class is used to prevent the class from being inherited from other classes. So “sealed” modifier also can be used with methods to avoid the methods to override in the child classes.

In C#, which of the classes are used to access file system

Description : In C#, which of the classes are used to access file system  A) File and TextReader B) File and directory C) StringReader and TextReader D) StringReader and directory

Last Answer : In C#, which of the classes are used to access file system  File and directory

How can I separate 2 items of glass that have been sealed together with silicone?

Description : How can I separate 2 items of glass that have been sealed together with silicone?

Last Answer : Razor blade or kinda expensive solvents

Did you ever buy a packaged product (perhaps not sealed) only to find out that it was empty when you got home?

Description : Did you ever buy a packaged product (perhaps not sealed) only to find out that it was empty when you got home?

Last Answer : answer:I have this problem re-selling from a mall. I've learned that you cannot re-sell a DVD with a risque depiction of the female form on the cover. Some boy will steal the disk and leave the box. I ... a really close watch, knowing that there's nothing to be done, and it will just make me mad. :)

Where can I find a small, opaque, hermetically sealed jar?

Description : Where can I find a small, opaque, hermetically sealed jar?

Last Answer : Do you really mean hermetically sealed, or do you just mean stoppered?

Does a letter have to be sealed for the mail man to pick it up?

Description : Does a letter have to be sealed for the mail man to pick it up?

Last Answer : Does it have an address and stamp on it? If not, he won’t take it. Why didn’t you seal it?

Do vacuum sealed foods go bad?

Description : Do vacuum sealed foods go bad?

Last Answer : answer:Yes, eventually it'll go bad. Freezer burn, taste not sure about actual mold, but you don't want to mess around too much with meat. I think well-sealed meat in a cold freezer is probably good ... . You just don't want to mess around with meat, because the food-poison can be much much worse.

If you are sealed into a sphere with a highly mirrored interior and you turn on a flashlight and then turn it off will the interior stay lit up?

Description : If you are sealed into a sphere with a highly mirrored interior and you turn on a flashlight and then turn it off will the interior stay lit up?

Last Answer : No. I think there is a certain amount of electron displacement that occurs with each reflection, which absorbs some of the light energy so that the reflection would eventually stop. However, if the ... I don't think is possible with current technology) then yes the interior would stay lit up.

What are the advantages/disadvantages to having a sealed or unsealed motorcycle battery?

Description : What are the advantages/disadvantages to having a sealed or unsealed motorcycle battery?

Last Answer : The first thought that came to mind is water. being a bike and low to the ground, it would seem that a waterproof battery would definetely be the best choice, since road water could possible shorten out an unsealed battery. does this make sense?

How do I read through a sealed envelope? Tricks?

Description : How do I read through a sealed envelope? Tricks?

Last Answer : maybe you can steam open the envelope

Is it legal to send a bottle of olive oil (unopened & sealed) from the US to Canada?

Description : Is it legal to send a bottle of olive oil (unopened & sealed) from the US to Canada?

Last Answer : Sure, just fill out a customs form for it.

How do you escape from a room that has no doors, completely sealed, and just has a table and a handsaw contained in this room?

Description : How do you escape from a room that has no doors, completely sealed, and just has a table and a handsaw contained in this room?

Last Answer : I think it’s something like saw a hole in the wall or something. I don’t really remember. Do you already know or do you want to know?

Just how do those dead bugs always find their way into my sealed light fixtures?

Description : Just how do those dead bugs always find their way into my sealed light fixtures?

Last Answer : answer:Be careful, AC. Sometimes they are not dead. One time we were renting a house that had a miniature version of the house in the backyard as a playhouse. My husband noticed that the ... of spiders, it was rather horrifying seeing them sticking their legs out of the dirt and standing up!

are canned tomatoes good if they leaked a bit in the water bath canner but sealed good when taken out of canner

Description : are canned tomatoes good if they leaked a bit in the water bath canner but sealed good when taken out of canner

Last Answer : I believe that you overfilled them and not leaving a space for the contents to steam in the glass jar, I would open them and freeze the contents.

Imagine you are in a box. It's airtight sealed, you have nothing with you. How do you get out? -Riddles

Description : Imagine you are in a box. It's airtight sealed, you have nothing with you. How do you get out? -Riddles

Last Answer : Stop imagining!

In order to figure out what is in a sealed box, you perform some tests. The box seems heavy for its size and is harder to remove from a steel table than when placed on a concrete floor. What kind of object could be inside the box?' -Riddles

Description : In order to figure out what is in a sealed box, you perform some tests. The box seems heavy for its size and is harder to remove from a steel table than when placed on a concrete floor. What kind of object could be inside the box?' -Riddles

Last Answer : The answer is magnet because it would be really hard to move a magnet across a steel table since it would attract to the steel-not making it able to move.

A man is discovered dead sitting at his desk, alone in the locked office. He did not commit suicide and there was no weapons in the room. The only clue is a sealed envelope on the desk in front of him.How did he die? -Riddles

Description : A man is discovered dead sitting at his desk, alone in the locked office. He did not commit suicide and there was no weapons in the room. The only clue is a sealed envelope on the desk in front of him.How did he die? -Riddles

Last Answer : The envelope glue was poisoned and when the man licked the envelope to seal it, he died.

Iron filling and water were placed in a 5 litre tank and sealed. The tank was heated to 1273 K. Upon analysis the tank was found to contain 1.10 gram

Description : Iron filling and water were placed in a 5 litre tank and sealed. The tank was heated to 1273 K. Upon analysis the tank was found to contain 1.10 gram

Last Answer : Iron filling and water were placed in a 5 litre tank and sealed. The tank was heated to 1273 K. Upon analysis ... `4.940xx10^(3)` D. `3.200xx10^(3)`

Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true for

Description : Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true for

Last Answer : Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m ... C. Particle pollutants D. All radioactive pollutants

The radioactive isotope of cerium - 137 of weigh 8g was collected on 1st Feb. 2006 kept in a sealed tube. On 1st July, 2006, it was found that only 0.

Description : The radioactive isotope of cerium - 137 of weigh 8g was collected on 1st Feb. 2006 kept in a sealed tube. On 1st July, 2006, it was found that only 0.

Last Answer : The radioactive isotope of cerium - 137 of weigh 8g was collected on 1st Feb. 2006 kept in a sealed tube. On ... days B. 30 days C. 25 days D. 50 days

A radioactive sample has a half life 1500 years. A sealed tube conataining 1g of the sample will contain after 3000 years,

Description : A radioactive sample has a half life 1500 years. A sealed tube conataining 1g of the sample will contain after 3000 years,

Last Answer : A radioactive sample has a half life 1500 years. A sealed tube conataining 1g of the sample will contain ... g of the sample D. 0.01g of the sample

`S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : dry iodine reacts with ozone and formed yell

Description : `S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : dry iodine reacts with ozone and formed yell

Last Answer : `S_(1):(HPO_(3))_(n)` can be prepared by heating phosphorous acid and bromine in a sealed tube. `S_(2)` : ... below 369 K. A. FTF B. TTF C. TTT D. TFF

Can greens sealed in plastic bags turn to salmonella?

Description : Can greens sealed in plastic bags turn to salmonella?

Last Answer : The only way the greens could have Salmonella is if theSalmonella was already in the greens when the package was sealed -or if the packaging itself was contaminated. Salmonella can grow onthe plant juices.