Unable to call static method in class from another

Question

I have a class file which contains a function to hash an input string.

using System;
using System.Security.Cryptography;
using System.Linq;
using System.Text;
u         


        

Answer 1

Are you trying to do this?

    HashingSystem hs = new HashingSystem();
    hs.sha256("Hello World"); //This wont work as static methods cannot be called via instances

Use the below way instead

    HashingSystem.sha256("Hello world");//Calling directly via class

Answer 2

You need to call static members against the class, not against an instance of a class. So you need to use:

HashingSystem.sha256("texthere");

Also, consider changing:

class HashingSystem

to:

public class HashingSystem

Classes are internal by default. I would recommend you always be explicit about visibility (i.e. always specify internal, public or private).