C# Program To Check A Specified Class Is A Sealed Class Or Not

C is a versatile programming language frequently employed for building applications within the Microsoft ecosystem. An intriguing aspect of C# is the ability to designate classes as sealed, which restricts the inheritance of a class.

In this article, we will delve into the concept of sealed classes and present a C# code snippet that allows you to check the sealed status of a specific class.

Understanding Sealed Classes:

A sealed class in C# is a class that is not extendable through inheritance. When a class is marked as sealed, it restricts other classes from deriving from it. This feature can be beneficial when you want to restrict the usage of a particular class to enforce specific behavior or architecture.

Syntax for Defining a Sealed Class:

The sealed keyword is utilized to define a sealed class in C#. Below is the fundamental syntax:

Example


sealed class SealedClass
{
    // Class members and methods
}

In the given scenario, when a class is marked as sealed, like the SealedClass, it implies that it cannot be inherited by any other class.

C# Program to Check if a Class is Sealed:

Next, we will examine the C# code that checks if a specific class is sealed. This code utilizes reflection, a powerful feature of C# that enables the examination and interaction with type metadata during runtime.

Example


using System;
 
class SealedClassChecker
{
    public static bool IsClassSealed(Type type)
    {
        return type.IsSealed;
    }
 
    static void Main()
    {
        // Specify the class name you want to check
        string classNameToCheck = "SampleClass";
 
        // Get the type using reflection
        Type classType = Type.GetType(classNameToCheck);
 
        if (classType != null)
        {
            if (IsClassSealed(classType))
            {
                Console.WriteLine($"{classNameToCheck} is a sealed class.");
            }
            else
            {
                Console.WriteLine($"{classNameToCheck} is not a sealed class.");
            }
        }
        else
        {
            Console.WriteLine($"Class {classNameToCheck} not found.");
        }
    }
}

Output:

Output


SampleClass is a sealed class.

✅ IsClassSealed Method:

This method is designed to ascertain the sealed status of a provided class. It takes a Type parameter representing the class type and checks the IsSealed property of the Type class to establish whether the class is sealed.

✅ Primary Function:

The Main function serves as the initial entry point of the software. It commences by specifying the class to be inspected using the variable classNameToCheck.

✅ Using Reflection to Retrieve Type Information:

The method GetType(classNameToCheck) from the Type class is employed to obtain the Type instance corresponding to the specified class. Reflection, a feature of C#, enables the examination and modification of type metadata during program execution.

✅ Validating Whether the Class is Sealed:

Finally, the obtained Type object is provided as an argument to the IsClassSealed function to determine if the class is sealed. The result of this evaluation is a boolean value indicating whether the class is sealed or not.

✅ Presenting the Outcome:

Based on the outcome of the verification process, the software generates a message indicating whether the designated class is closed or open for extension.

If the class is finalized, it displays a notification stating so. Otherwise, it indicates that the class is not sealed.

Conclusion:

In essence, the C# code supplied serves as a valuable tool for programmers seeking to ascertain whether a specific class is sealed, thus limiting its inheritance. The employment of reflection underscores the flexibility of the programming language, allowing for the examination of type information during runtime. Leveraging the IsSealed property, the IsClassSealed function proves beneficial by offering a simple and efficient means to check if a class is sealed.

It plays a crucial role in C# programming, as sealed classes serve to restrict the extension of classes for programmers. They prevent inheritance, promote encapsulation, and contribute to the development of robust and secure codebases.

The functionality of the software is enhanced by its intuitive setup, requiring developers to simply specify the relevant class name. The resulting messages effectively indicate whether the requested class is restricted or not, streamlining the decision-making process during development.

In a broader sense, this software showcases the elegance and sophistication of C# as a programming language. The combination of reflection and sealed classes emphasizes the language's emphasis on providing developers with robust and practical tools for developing resilient and secure software applications.

Understanding Sealed Classes:

Syntax for Defining a Sealed Class:

C# Program to Check if a Class is Sealed:

Conclusion:

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