How to implement a generic interface in C#? Provide an example.

Question

Aryan Kumar · Answer

To implement a generic interface in C#, follow these steps and see an example:

Step 1: Define the generic interface.

public interface IGenericInterface<T>
{
    void PrintData(T data);
}

In this example, IGenericInterface is a generic interface with one method, PrintData, that can work with a generic type T.

Step 2: Implement the generic interface in a class.

public class GenericClass<T> : IGenericInterface<T>
{
    public void PrintData(T data)
    {
        Console.WriteLine($"Data: {data}");
    }
}

Here, GenericClass is a class that implements the IGenericInterface using the same generic type T. It provides an implementation for the PrintData method.

Step 3: Use the generic class.

class Program
{
    static void Main()
    {
        IGenericInterface<int> intPrinter = new GenericClass<int>();
        intPrinter.PrintData(42);

        IGenericInterface<string> stringPrinter = new GenericClass<string>();
        stringPrinter.PrintData("Hello, World!");
    }
}

In this example, we create instances of the GenericClass for both int and string types and use them to print data. The interface allows us to work with different data types in a generic manner.

This demonstrates how to implement a generic interface in C#. You can use the same interface with different data types, providing flexibility and reusability in your code.

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