How to call an extension method without using

Question

using System;

class Runner
{
    static void Main()
    {
        A a = new A();
        // how to say a.PrintStuff() without a \'using\'
        Console.Read();
           


        

Answer 1

You can add extensions method without namespace. This will affect the whole systems which is not recommended.

public static class StringExtensions
{       
    public static void HelloWorld(this String s)
    {
        Console.Write("Hello World");
    }
}



    string str = "s";
    str.HelloWorld();