我刚刚开始自学C#和ASP - 我目前正在开发一个简单的WebApp来维护一个列表并确保条目是最新的。无法获得在实体框架中的排序工作
我已经使用实体框架的数据库第一种方法,以获得它的所有链接,并加载&编辑数据没有问题。
我试图添加排序&搜索;我已经成功完成了这些工作,但我不得不退回一些工作,现在排序/搜索功能无法正常工作。我想我知道问题在哪里,但不知道如何解决!
昨天花了几个小时试图解决它没有运气,所以想我会在这里尝试我的运气。
模型文件结构: 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());
}
我有一种强烈的预感,这个问题是与该位:
var loggerz = from s in db.Logger_Entity
select s;
任何帮助,不胜感激!
偏离主题,但看看[System.Linq.Dynamic(https://开头www.nuget.org/packages/System.Linq.Dynamic/) –