Generics in DotNet

Hi Kiran Kumar,

Generics in .DotNet is a powerful feature which allows to define classes, interfaces, methods, delegates with a placeholder for the data type. It enables type safety, code reuse, and performance improvements without sacrificing flexibility.

Advantages:

• Type Safety: Errors are caught at compile time instead of runtime.
• Performance: Avoids boxing/unboxing for value types.
• Code Reusability: Write one class or method which works with any data type.

Generic Types in .NET

• List: Strongly typed list.
• Dictionary: Collection of key-value pairs.
• Queue, Stack, HashSet: Generic collections.

Example 1: Generic Class

public class GenericBox
{
    public T Value { get; set; }

    public void Display()
    {
        Console.WriteLine($"Value: {Value}");
    }
}

How to use it

var intBox = new GenericBox { Value = 10 };
intBox.Display(); // Output: Value: 10

var stringBox = new GenericBox { Value = "Hello" };
stringBox.Display(); // Output: Value: Hello

Example 2: Generic Method

public class Utility
{
    public static void Swap(ref T a, ref T b)
    {
        T temp = a;
        a = b;
        b = temp;
    }
}

Hope this will help!

Generics in .NET allow you to create classes, methods, and data structures with a placeholder for data types.

?? Features in system development:

• Type safety (no boxing/unboxing).

• Code reusability (one class works for any type).

• Better performance (avoids runtime casting).

• Flexibility for collections, repositories, and APIs.