遍历实体框架父子关系的泛型方法

public static void TraverseEntityHierarchy<T>(T entity, Action<T> action) where T : class
{
    action(entity);

    var properties = typeof(T).GetProperties();

    foreach (var property in properties)
    {
        if (property.PropertyType.IsGenericType && property.PropertyType.GetGenericTypeDefinition() == typeof(ICollection<>))
        {
            var collection = property.GetValue(entity) as IEnumerable<object>;

            if (collection != null)
            {
                foreach (var item in collection)
                {
                    TraverseEntityHierarchy(item as T, action);
                }
            }
        }
        else if (property.PropertyType.Namespace.StartsWith("YourNamespace"))
        {
            var childEntity = property.GetValue(entity) as T;

            if (childEntity != null)
            {
                TraverseEntityHierarchy(childEntity, action);
            }
        }
    }
}