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Compiler Error CS0577

Conditional not valid on 'function' because it is a constructor, destructor, operator, or explicit interface implementation

Conditional cannot be applied to the specified methods.

The following sample generates CS0577:

// CS0577.cs
interface I
{
   void m();
}

public class MyClass : I
{
   [System.Diagnostics.Conditional("a")]   // CS0577
   // cannot use the above attribute on an explicit interface definition
   void I.m()
   {
   }

   public static void Main()
   {
   }
}
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