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Generic classes and methods in C#

In C#, Generic classes and methods combine reusability, efficiency, and type safety in a way that their non-generic counterparts cannot.

Generics allow defining the specification of the data type of C# programming elements in a class or a method. Generic class, must use angle <> brackets.The angle brackets are used to declare a class or method as generic type.


C# Generic class example

using System;  

namespace CSharpProgram
{
    public class GenericClass<T>
    {
        public GenericClass(T message)
        {
            Console.WriteLine(message);
        }
    }
    public class Program
    {
       public static void Main(string[] args)
        {
            GenericClass<string> objGenString = new GenericClass<string> ("This is generic class Example");
            GenericClass<int> objGenint = new GenericClass<int>(101);
            GenericClass<char> objGenCh = new GenericClass<char>('I');
        }
    }
}  

Output

This is generic class Example

101

I

Generic Method Example

using System;  

namespace CSharpProgram
{
    public class GenericClassExample
    {
        public void Show<T>(T message)
        {
            Console.WriteLine(message);
        }
    }
   public class Program
    {
        public static void Main(string[] args)
        {
            GenericClassExample genC = new GenericClassExample();
            genC.Show("This is generic method Example");
            genC.Show(101);
            genC.Show('I');
        }
    }

Output

This is generic method Example

101

I