Question

我有3个表小册子，类别和程序。 Pamphlet表具有CategoryID和ProgramID列。以下代码有效：

var pamphlets = db.Pamphlets.Include("Category").Include("Program").ToList();

我需要做的是按CategoryName（类别表）排序，然后按PamphletName（小册子表）排序。

Answer 1

您只需将调用链接到ThenBy（）：

var sortedPamphlets = db.Pamphlets.Include("Category").Include("Program")
                        .OrderBy(p => p.Category.CategoryName)
                        .ThenBy(p => p.PamphletName)
                        .ToList();

Answer 2

怎么样：

var pamphlets = (from p in db.Pamphlets.Include("Category").Include("Program")
                orderby p.Category.CategoryName, p.PamphletName
                select p).ToList();

Answer 3

试试这个：

var pamphlets = (from i in db.Pamphlets.Include("Category").Include("Program")
                 orderby i.Category.CategoryID, i.PamphletName
                 select i).ToList();

LINQ多个订单

3 个答案: