We have a multi-lingual site, where English is the "parent" and all others are copies of and related to the English parent. When we delete or unpublish a node in the English section, we'd like all the related nodes to also be affected.

Documentation for these (particularly unpublish) has been very difficult to find, so I'm turning to the forums.

I've tried the following, but nothing is happening when I do the actions.

For delete I have:

ContentService.Trashed += ContentService_Trashed;
void ContentService_Trashed(IContentService sender, MoveEventArgs<IContent> e)
    {
        var rs = ApplicationContext.Current.Services.RelationService;
        var cs = ApplicationContext.Current.Services.ContentService;

        // get the parent
        foreach (var parentRelation in rs.GetByParentId(e.ParentId))
        {
            cs.MoveToRecycleBin(cs.GetById(parentRelation.ChildId));
        }
    }

For the unpublish, I have (this is actually unpublishing the related node's parent and I'm not sure why):

ContentService.UnPublished += ContentService_UnPublished;
void ContentService_UnPublished(IPublishingStrategy sender, PublishEventArgs<IContent> e)
    {
        var rs = ApplicationContext.Current.Services.RelationService;
        var cs = ApplicationContext.Current.Services.ContentService;

        // go through each document unpublished
        foreach (var c in e.PublishedEntities)
        {                
            // get the parent
            foreach (var parentRelation in rs.GetByParentId(c.ParentId).Where(x => x.RelationType.Alias == RelationTypes.RelateDocumentOnCopy))
            {
                // copy the item if not already a relation
                cs.UnPublish(cs.GetById(parentRelation.ChildId));
            }
        }
    }