我想优化以下代码行以进行排序。
public ViewResult Index(string sortorder, int? pagesize, int? page)
{
int pageSize = pagesize ?? 10;
if (Request.HttpMethod != "GET")
{
page = 1;
pageSize = 10;
}
ViewBag.SelectedPageSize = pageSize;
ViewBag.CurrentSort = sortorder;
ViewBag.FirstNameSortParm = String.IsNullOrEmpty(sortorder) ? "FirstName desc" : "";
ViewBag.LastNameSortParm = sortorder == "LastName" ? "LastName desc" : "LastName";
ViewBag.DepNameSortParm = sortorder == "depName" ? "depName desc" : "depName";
var joined = from tm in db.TabMasters select tm;
switch (sortorder)
{
case "FirstName":
joined = joined.OrderBy(m => m.FirstName);
break;
case "FirstName desc":
joined = joined.OrderByDescending(m => m.FirstName);
break;
case "LastName":
joined = joined.OrderBy(m => m.LastName);
break;
case "LastName desc":
joined = joined.OrderByDescending(m => m.LastName);
break;
case "depName":
joined = joined.OrderBy(m => m.depName);
break;
case "depName desc":
joined = joined.OrderByDescending(m => m.depName);
break;
default:
joined = joined.OrderBy(m => m.FirstName);
break;
}
int pageIndex = (page ?? 1) - 1;
int start = (pageIndex * pageSize);
ViewBag.TotalRecord = joined.Count();
ViewBag.StartRecord = start + 1;
ViewBag.EndRecord = ((start + pageSize) >= ViewBag.TotalRecord) ? ViewBag.TotalRecord : (start + pageSize);
return View(joined.ToPagedList(pageIndex, pageSize));
}
因为如果我有更多的 10 个字段来执行排序,这是非常乏味的方式。
谢谢, 伊姆达杜森