<AttributeUsage(System.AttributeTargets.Class, AllowMultiple :=  True)> _ 
Public Class nestedException 
    Inherits Exception

[AttributeUsage(System.AttributeTargets.Class, AllowMultiple :=  True)] 
public class nestedException : Exception

[AttributeUsage(System.AttributeTargets.Class, AllowMultiple :=  True)] 
public ref class nestedException : public Exception^

public  
   AttributeUsage(System.AttributeTargets.Class, AllowMultiple :=  True) 
class nestedException 
   extends Exception