How to know if a PropertyInfo is a collection

Question

Below is some code I use to get the initial state of all public properties in a class for IsDirty checking.

What's the easiest way to see if a property is IEnumerable?

Cheers,
Berryl

  protected virtual Dictionary<string, object> _GetPropertyValues()
    {
        return _getPublicPropertiesWithSetters()
            .ToDictionary(pi => pi.Name, pi => pi.GetValue(this, null));
    }

    private IEnumerable<PropertyInfo> _getPublicPropertiesWithSetters()
    {
        return GetType().GetProperties().Where(pi => pi.CanWrite);
    }

Answer 1

if ( typeof( IEnumerable ).IsAssignableFrom( pi.PropertyType ) )

Answer 2

Try

private bool IsEnumerable(PropertyInfo pi)
{
   return pi.PropertyType.IsSubClassOf(typeof(IEnumerable));
}