NGWS SDK Documentation  

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Compiler Error CS0562

The parameter of a unary operator must be the containing type

The method declaration for an operator overload must follow certain guidelines.

The following sample generates CS0562:

namespace x
{
   public class iii
   {
      public static implicit operator int(iii x)
      {
         return 0;
      }
      public static implicit operator iii(int x)
      {
         return null;
      }
      public static iii operator +(int aa)   // CS0562
      // try the following line instead
      // public static iii operator +(iii aa)
      {
         return (iii)0;   
      }
      public static void Main()
      {
      }
   }
   
}