我剛剛開始自學C#和ASP - 我目前正在開發一個簡單的WebApp來維護一個列表並確保條目是最新的。無法獲得在實體框架中的排序工作
我已經使用實體框架的數據庫第一種方法,以獲得它的所有鏈接,並加載&編輯數據沒有問題。
我試圖添加排序&搜索;我已經成功完成了這些工作,但我不得不退回一些工作,現在排序/搜索功能無法正常工作。我想我知道問題在哪裏,但不知道如何解決!
昨天花了幾個小時試圖解決它沒有運氣,所以想我會在這裏嘗試我的運氣。
模型文件結構: Models> Loggers.edmx> Loggers.tt> Logger_Name.cs。
public partial class Logger_Name
{
public int Serial { get; set; }
public string Friendly_Name { get; set; }
public string Site { get; set; }
public string tSiteCode { get; set; }
public string aSiteCode { get; set; }
}
picture of edmx diagram with names
控制器
public class LoggersController : Controller
{
private REDHHP_DEVEntities db = new REDHHP_DEVEntities();
// GET: Loggers
public ActionResult Index(string sortOrder, string searchString)
{
ViewBag.NameSortParm = sortOrder == "friendly_name_asc" ? "friendly_name_desc" : "friendly_name_asc";
ViewBag.SiteSortParm = sortOrder == "site_asc" ? "site_desc" : "site_asc";
ViewBag.CodeSortParm = sortOrder == "site_code_asc" ? "site_code_desc" : "site_code_asc";
ViewBag.SerialSortParm = sortOrder == "serial_asc" ? "serial_desc" : "serial_asc";
var loggerz = from s in db.Logger_Entity
select s;
if (!String.IsNullOrEmpty(searchString))
{
loggerz = loggerz.Where(s => s.Friendly_Name.Contains(searchString)
|| s.Site.Contains(searchString)
|| s.tSiteCode.Contains(searchString));
}
switch (sortOrder)
{
case "site_desc":
loggerz = loggerz.OrderByDescending(s => s.Site);
break;
case "friendly_name_desc":
loggerz = loggerz.OrderByDescending(s => s.Friendly_Name);
break;
case "fite_code_desc":
loggerz = loggerz.OrderByDescending(s => s.tSiteCode);
break;
case "site_asc":
loggerz = loggerz.OrderBy(s => s.Site);
break;
case "friendly_name_asc":
loggerz = loggerz.OrderBy(s => s.Friendly_Name);
break;
case "site_code_asc":
loggerz = loggerz.OrderBy(s => s.tSiteCode);
break;
case "serial_desc":
loggerz = loggerz.OrderByDescending(s => s.Serial);
break;
case "serial_asc":
loggerz = loggerz.OrderBy(s => s.Serial);
break;
default:
loggerz = loggerz.OrderBy(s => s.Site);
break;
}
return View(db.Logger_Entity.ToList());
}
我有一種強烈的預感,這個問題是與該位:
var loggerz = from s in db.Logger_Entity
select s;
任何幫助,不勝感激!
偏離主題,但看看[System.Linq.Dynamic(https://開頭www.nuget.org/packages/System.Linq.Dynamic/) –