Question

我试图通过降序排序以下列表，但我似乎无法弄清楚它是如何完成的：

var cust = item.Profiles.Select(c => new
               {
                   id = c.CustId,
                   Name = c.Name
               }).ToList();
ViewBag.Customers = new MultiSelectList(cust, "id", "Name");

这是我已经尝试过的：

var cust = item.Profiles.Select(c => new
               {
                   id = c.CustId,
                   Name = c.Name.OrderByDescending();
               }).ToList();
ViewBag.Customers = new MultiSelectList(cust, "id", "Name");

这是列表在我的视图中的显示方式：

@Html.DropDownList("id", (MultiSelectList)ViewBag.Customers, new { @class = "form-control", id = "lstCustomer" })

注意：我正在尝试按字母顺序对列表进行排序

Answer 1

使用Linq：

var cust = item.Profiles.Select(c => new
            {
                id = c.CustId,
                Name = c.Name
            }).OrderByDescending(c => c.Name).ToList();

或更优雅（查询语法）：

var cust = (from c in item.Profiles
            orderby c.Name
            select new
            {
                id = c.CustId,
                Name = c.Name
            }).ToList();

Answer 2

var cust = item.Profiles.Select(c => new
                {
                    id = c.CustId,
                    Name = c.Name

                }).OrderByDescending(c=>c.Name).ToList();

或者

 var cust = item.Profiles.OrderByDescending(a=>a.Name).Select(c => new
            {
                id = c.CustId,
                Name = c.Name

            }).ToList();

Answer 3

使用查询语法执行相同的操作：

  var cust = (from c in item.Profiles
              orderby c.Name descending
              select new
                     {
                        id = c.CustId,
                        Name = c.Name
                     }
              ).ToList();

MVC - 有序列表

3 个答案: