Asp.Net concat 表，以便它们按正确的 C# LINQ 排序

Question

我正在制作一个按某种列显示表格顺序的视图：

查看：

@*<a href="@Url.Action("Index", new { filtro = "plantacao comeca", ordem
= "desc"})"><span class="glyphicon glyphicon-plus-sign"></span></a>
        <a href="@Url.Action("Index", new { filtro = "plantacao comeca", ordem = "asc"})"><span class="glyphicon glyphicon-minus-sign"></span></a>*@

控制器：

case "plantacao comeca":
    var january = artigo.Where(a => a.plantacaoComeca == "January");
    var february = artigo.Where(a => a.plantacaoComeca == "February");

    // and so on and so one
    // I whant to contact this tables in order where !!!
    break;

所以我想知道如何连接这些表或用不同的字符串或数字对它们进行排序......

Answer 1

将Where 组合成一个查询有什么问题？

var januaryFebruary = artigo.Where(
    a => a.plantacaoComeca == "January" 
      || a.plantacaoComeca == "February");

Answer 2

将月份的字符串表示形式转换为DateTime，然后将其转换为OrderBy。最后，因为新的SortValue 与输出无关，所以我添加了select

var sortedByMonths = artigo
    .Select(item => new { Item = item, SortValue = DateTime.ParseExact(item.plantacaoComeca , "MMMM", CultureInfo.InvariantCulture) })
    .OrderBy(item => item.SortValue)
    .Select(item => item.Item)
    .ToList();

你也可以使用Where和Concat（但我觉得不太好）：

var january = artigo.Where(a => a.plantacaoComeca == "January");
var february = artigo.Where(a => a.plantacaoComeca == "February");

january.Concat(february).Concat(....)