Add example for C2487

docs/error-messages/compiler-errors-1/compiler-error-c2487.md

@@ -1,13 +1,29 @@
 ---
 description: "Learn more about: Compiler Error C2487"
 title: "Compiler Error C2487"
-ms.date: "11/04/2016"
+ms.date: "03/04/2024"
 f1_keywords: ["C2487"]
 helpviewer_keywords: ["C2487"]
-ms.assetid: 95d734fb-64ac-488d-b799-64f084eecb09
 ---
 # Compiler Error C2487
 
 'identifier' : member of dll interface class may not be declared with dll interface
 
 You can declare a whole class, or certain members of a non-DLL interface class, with DLL interface. You cannot declare a class with DLL interface and then declare a member of that class with DLL interface.
+
+The following sample generates C2487:
+
+```cpp
+// C2487.cpp
+// compile with: /c
+class __declspec(dllexport) C
+{
+    __declspec(dllexport) void func() {}   // C2487
+};
+```
+
+To resolve this error, remove the DLL interface on the class or the members.
+
+## See also
+
+[Using `dllimport` and `dllexport` in C++ classes](../../cpp/using-dllimport-and-dllexport-in-cpp-classes.md)