var articles = (from a in context.Articles
where a.Id != articleId
orderby a.Categories ??Name?? ascending
select a).ToList();
a.Categories是表格(与许多关系相关联)
public EntityCollection<Category> Categories
{
get
{
return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedCollection<Category>("AsoModel.CategoryArticle", "Category");
}
set
{
if ((value != null))
{
((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedCollection<Category>("AsoModel.CategoryArticle", "Category", value);
}
}
}
如何在“类别”表上使用“按名称升序”。
示例:
文章名称:足球和本文属于体育和新闻类别。因此,两个表由许多关系连接。现在我想按类别名称订购这篇文章,而新闻是第一,Sport是第二......
答案 0 :(得分:2)
var articles = context.Articles.Where(a=>a.Id != articleId)
.OrderBy(p=>p.Categories.OrderBy(q=>q.Name).FirstOrDefault().Name).ToList();