Missing something in this method to get the Entity property

private String[] GetProperties(EContent_EcontentFields eContentField)
{
    List<String> list = new List<String>();
    Type fieldType = eContentField.GetType();
    var properties = fieldType.GetProperties();
    foreach (var prop in properties)
    {
        if (prop.MemberType == MemberTypes.Property)
        {
            if (prop.PropertyType.IsGenericType)
            {
                dynamic items = prop.GetValue(eContentField, null);
                foreach (var item in items)
                {
                    Type typeItem = item.GetType();
                    list.Add(item);
                }
            }
        }
    }

    return list.ToArray();
}

This is my method to retrieve an array of strings with the properties of my entity but the statement:

if (prop.PropertyType.IsGenericType)

It's always false. I've copy-pasted the code so maybe I'm missing something. Something that I can't see.