Question

If I have a class,any member in it that I don’t declare static will have this error if I reference it inside the class:

An object reference is required for the non-static field, method, or
property

What am I doing wrong?

Answer 1

You will get that error if you are accessing a instance method from a static context. For example

public class Dog
{
  public void Speak(){ Console.WriteLine( "Bark" ); }

  public static void KickDog(){ 
    Speak(); // <- Error here
  }
}

Instead you need to create an instance of the class

public static void KickDog()
{
  new Dog().Speak();
}

However, a mix-up like this might suggest a misunderstanding of C# semantics and I’d recommend picking up any one of the intro to C# books on Amazon to get a better understanding.