PagedList ViewModel实现

时间:2012-12-10 10:38:59

标签: c# asp.net-mvc pagedlist

我正在尝试找出在asp.net MVC中使用ViewModel实现pagedlist的正确方法。

说我有以下PagedClientViewModel:

public class PagedClientViewModel
{
    public PagedList.IPagedList<ClientViewModel> Clients { get; set; }
}

public class ClientViewModel
{
    public string ClientNumber { get; set; }
    public string ClientName { get; set; }       
}

我的观点将参考模型如下:

@model PagedClientViewModel

并且action方法如下所示:

    public ActionResult Index(int? page)
    {
        var pageNumber = page ?? 1;

        var clients = GetAllClients();

        var onePageOfClients = clients.ToPagedList(pageNumber, 25);

        PagedClientViewModel model = new PagedClientViewModel();

        var clientViewModels = new List<ClientViewModel>();

        foreach (var client in clients)
        {
            ClientViewModel clientVM = new ClientViewModel
            {
                ClientName = client.CLIENTNAME,
                ClientNumber = client.CLIENTNO,         
            };
            clientViewModels.Add(clientVM);
        }                    

        model.Clients = //how do I add the clientViewModels to the PagedList<ClientViewModel>?

        return View(model);
    }

我不想在创建视图模型时从数据库中迭代整个客户端记录列表 - 我是否通过拥有包含页面列表的视图模型来使事情过于复杂?我不想使用ViewBag!

我的ViewModel应该是什么样的?

3 个答案:

答案 0 :(得分:3)

通过结合使用答案,可以很好地完成这项工作:

    public ActionResult Index(PagedClientViewModel model)
    {
        var pageIndex = model.Page ?? 1;
        var clients = from client in GetAllClients() orderby client.CLIENTNUMBER
                      select new ClientViewModel
                          {
                              ClientName = client.CLIENTNAME,
                              ClientNumber = client.CLIENTNO

                          };        

        model.Clients = clients.ToPagedList(pageIndex, 25);

        return View(model);
    }


public class PagedClientViewModel
{
    public int? Page { get; set; }
    public PagedList.IPagedList<ClientViewModel> Clients { get; set; }
}

public class ClientViewModel
{
    public string ClientNumber { get; set; }
    public string ClientName { get; set; }       
}

答案 1 :(得分:2)

您应该更改调用以检索数据以包含页面参数并在数据库中执行过滤。这样,您只需从数据库中返回所需的数据。

var clients = GetClients(page);

此外,如果您不想循环返回的客户端(您似乎不需要这样),只需将返回的列表直接设置为ViewModel即可。像这样的东西会起作用。确保更新ViewModel,以便正确键入model.Clients

var clients = GetClients(page);

model.Clients = clients;

答案 2 :(得分:2)

我会简化它,就像这样:

public IEnumerable<ClientViewModel> Clients { get; set; }

model.Clients = from client in GetAllClients().Skip(pageNumber * PageSize).Take(PageSize)
                       select new ClientViewModel
                       {
                           ClientName = client.CLIENTNAME,
                           ClientNumber = client.CLIENTNO,  
                       };