Sealed class is nothing but final class. we can instantiate the sealed class but can't inherit sealed class.
Sealed keyword is used to restrict the inheritance, if we make a class sealed that means it can only be instantiated.
a sealed class is same as a final class. 1.we cannot inherit sealed class. 2.we can instantiate the sealed class.
In simple things, Sealed means you can not use this class as a base class. You can create instance of this class and access properties and methods.
using System;public class Program{ public static void Main() { ExampleCls example = new ExampleCls(); example.num = 5; Console.WriteLine(example.num); Console.ReadLine(); }}public sealed class ExampleCls { public int num { get; set; } public string data { get; set; } }//You can not use as base class like belowpublic class ExampleCls2 : ExampleCls { public int num2 { get; set; } public string data2 { get; set; } }
using System;
public class Program
{
public static void Main()
ExampleCls example = new ExampleCls();
example.num = 5;
Console.WriteLine(example.num);
Console.ReadLine();
}
public sealed class ExampleCls
public int num { get; set; }
public string data { get; set; }
//You can not use as base class like below
public class ExampleCls2 : ExampleCls
public int num2 { get; set; }
public string data2 { get; set; }
In C#.Net, The purpose of Sealed class is to restrict the Inheritance functionality of OOPS.
If we name a class as sealed class,it cannot be inherited.Syntax: sealed class MyClass
Sealed class is such a class when it is used we can not inherit that class to any derived class. Sealed class can only useful when scenario comes to not allowing existing class inherit to other classes(last station of inherit that class).
We make a class Sealed if you do not want that particular class to be further inherited by any other class. This class can inherit from other classes but No class can inherit this Sealed Class. We can instantiate such classes but cannot inherit them further. Hope the concept is clear now.
C# sealed keyword applies restrictions on the class and method. If you create a sealed class, it cannot be derived. If you create a sealed method, it cannot be overridden.
Sealed classes are used to restrict the inheritance feature of object oriented programming. Once a class is defined as sealed class, this class cannot be inherited. In C#, the sealed modifier is used to define a class as sealed. In Visual Basic .NET, NotInheritable keyword serves the purpose of sealed.
Sealed class are used to restrict the inheritance feature of oop.Once class is defined as sealed ,The class cant be inherrited.
A class which doesn't allows inheritance concept.
You can not inherit or extend a sealed class.
If you want to restrict inheritance of any class make it with sealed keyword. when you define class as sealed that class can't inherit.
If we want that no-one can inherit our class then we can use sealed class.
A class which can't be inherited further.
Which can't be inherited further.
If you dont want someone inherit the class or restrict to inherit . sealed class helpful in this sceanrio.
https://www.c-sharpcorner.com/article/sealed-class-in-C-Sharp/
1.)It's a final class 2.)A sealed class can be instantiate cannot inherited.its restricts inheritance
Sealed classes are used to restrict the inheritance feature of object oriented programming. Once a class is defined as sealed class, this class cannot be inherited. In C#, the sealed modifier is used to define a class as sealed.
You can not inherit class marked with Sealed keyword .If you mark function in base class with virtual keyword and override that function in derive class and you do not want that function to get override further in child class of derive then you mark function in derive class with sealed keyword
Sealed class is the class which cant be inherit but can be instantiate.
A sealed class is used to restrict the inheritance nothing else
Sealed classes are used to restrict the inheritance feature of object oriented programming.
If a class is declared as Sealed we can not inherit the class the within the class and outside the class also.
the class which is sealed is aclled sealed class.