How to tell if object is an enum?

How to tell if object is an enum?

I'm not a C# wizard, but there has to be a simple solution for this.
I have an IValueConverter for a DataTemplate. The converter will be used
in a control whose data is bound to an object of type enum: public enum
ContentTypes. I want to write a generic converter that can take any enum
and then do something with it however when the converter below does it's
thing the object parameter's type is ContentTypes rather than Enum.
The Convert method:
public object Convert(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
Type valueType = value.GetType(); // <-- evaluates to
`ContentTypes`. How can I just see if it's an enum, or Enum?
if (value.GetType() == typeof(Enum))
{
// Do something ....
}
return null;
}
So, is it possible to take an object of unknown type and determine if it
is an enum and cast it to such an enum, generically? I'm missing something
basic.