Compiler Error CS1534

  • Article

Overloaded binary operator 'operator' takes two parameters

The definition of a binary overloadable operator must take two parameters.

The following sample generates CS1534:

// CS1534.cs
class MyClass
{
   public static MyClass operator - (MyClass MC1, MyClass MC2, MyClass MC3)   // CS1534
   // try the following line instead
   // public static MyClass operator - (MyClass MC1, MyClass MC2)
   {
      return new MyClass();
   }

   public static int Main()
   {
      return 1;
   }
}