这里有一个C# MVC的完全初学者需要帮助。
我被卡在将viewmodel数据传递给PagedList上。
我做错了什么?
控制器中出现的错误信息如下:
无法隐式转换类型“PagedList.IPagedList”为“PagedList.IPagedList”。存在显式转换(你是否缺少一个转换?)
我检查了很多其他关于此主题的帖子,但是无法解决我的问题。
这是我的视图模型:
public partial class NaloziViewModel
{
public int IDNalozi { get; set; }
public int KlijentID { get; set; }
[DisplayFormat(DataFormatString = "{0:dd/MM/yyyy HH:mm}", ApplyFormatInEditMode = true)]
public DateTime VremeStart { get; set; }
[DisplayFormat(DataFormatString = "{0:dd/MM/yyyy HH:mm}", ApplyFormatInEditMode = true)]
public DateTime? VremeKraj { get; set; }
public int KilometrazaStart { get; set; }
public int? KilometrazaKraj { get; set; }
public virtual Klijent Klijent { get; set; }
public int? Page { get; set; }
}
分页类
public class Pagedclass
{
public PagedList.IPagedList<NaloziViewModel> mylist { get; set; }
public int KilometrazaSum { get; set; }
public int VremeSum { get; set; }
}
控制器:
public ActionResult Index(int? page, DateTime? dateFrom, DateTime? dateTo, string klijentIme)
{
int pageSize = 10;
int pageNumber = (page ?? 1);
var naloziFilter = db.Nalozis.Include(n => n.Klijent).OrderByDescending(n => n.IDNalozi).Where(n => n.Obrisan == 0).ToPagedList(pageNumber,pageSize);
if (dateFrom != null && dateTo != null )
{
naloziFilter = naloziFilter.Where(n => n.Klijent.NazivKlijenta.Contains(klijentIme)).Where(n => n.VremeStart >= dateFrom).Where(n => n.VremeKraj <= dateTo).ToPagedList(pageNumber,pageSize);
TimeSpan vremeSum = new TimeSpan();
naloziFilter.Where(x => x.VremeKraj.HasValue).ToList().ForEach(x => vremeSum += x.VremeKraj.Value - x.VremeStart);
var model = new Pagedclass
{
mylist = naloziFilter,
KilometrazaSum = naloziFilter.Sum(n => n.KilometrazaKraj ?? 0) - naloziFilter.Sum(n => n.KilometrazaStart),
VremeSum = (vremeSum.Days*24)+vremeSum.Hours,
};
return View(model);
}
else
{
TimeSpan vremeSum = new TimeSpan();
naloziFilter.OrderByDescending(n => n.IDNalozi).Where(n => n.Obrisan == 0).Where(x => x.VremeKraj.HasValue).ToList().ForEach(x => vremeSum += x.VremeKraj.Value - x.VremeStart);
var model = new Pagedclass
{
mylist = naloziFilter,
KilometrazaSum = naloziFilter.Sum(n => n.KilometrazaKraj ?? 0) - naloziFilter.Sum(n => n.KilometrazaStart),
VremeSum = (vremeSum.Days * 24) + vremeSum.Hours
};
return View(model);
}
}
我的观点:
@model Pagedclass
@using PagedList;
@using PagedList.Mvc;
....
db.Nalozis
查询返回的集合是Nalozi
而不是NaloziViewModel
的集合。您需要将这些项投影到NaloziViewModel
。 - Jasen