Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All
Expand Minimize

Compiler Error CS1554

Declaration is not valid; use '<type> operator op (...' instead

The return type for a user-defined operator must appear before the keyword operator.

The following sample generates CS1554:

// CS1554.cs
class MyClass
{
   public static operator ++ MyClass (MyClass f)    // CS1554
   // try the following line instead
   // public static MyClass operator ++ (MyClass f)
   {
      return new MyClass ();
   }

   public static void Main()
   {
   }
}
Show:
© 2015 Microsoft