I'm trying to figure out pass by reference in C#.

ValvRef

class foo
{
  int a;
  int b;
  int c;
  
  GenericLargeExistingClass glec = new GenericLargeExistingClass();
  
  foo()
  {
  }
}

public static void Main()
{
  foo exampleFoo = new foo();
//Which of these is faster?
  passByVal(exampleFoo);
  
  passByRef(ref exampleFoo);
}

public void passByVal(foo f)
{
    // Some stuff occurs using f
}

public void passByRef(ref foo f)
{
    // Some stuff occurs using f
}