Question

所以我有一个视图模型：

public class ClientViewModel
{
    public int ClientID { get; set; }
    [Required]
    [DisplayName("Client Name")]
    public string Name { get; set; }
    [Required]
    [DisplayName("Client Surname")]
    public string Surname { get; set; }
}

我使用此视图模型的视图（用于搜索客户列表的按钮，按名称排序客户的按钮和按姓氏排序客户的按钮）：

@model IList<ClientViewModel>

@using (Html.BeginForm("Index", "Client", FormMethod.Post))
{
@Html.AntiForgeryToken()

<div class="form-horizontal">

<div class="form-group">
    <label class="control-label col-md-2">Enter client info:</label>
    <div class="col-md-10">
        <input type="text" id="clientInfo" name="clientInfo" value="@Session["input"]" />
    </div>
</div>

<div class="form-group">
    <div class="col-md-offset-2 col-md-10">
        <input type="submit" name="command" value="Search Client" class="btn btn-default" />
    </div>
</div>

<div class="form-group">
    <div class="col-md-offset-2 col-md-2">
        <input type="submit" name="command" value="Sort by client name" class="btn btn-default" />
    </div>
    <div class="col-md-2">
        <input type="submit" name="command" value="Sort by client surname" class="btn btn-default" />
    </div>
</div>

</div>

<table class="table">
<tr>
    <th>
        @Html.DisplayNameFor(model => model[0].Name)
    </th>
    <th>
        @Html.DisplayNameFor(model => model[0].Surname)
    </th>
</tr>

@for (var i = 0; i < Model.Count; i++)
{
    @Html.HiddenFor(x => x[i].ClientID)
    <tr>
        <td>
            @Html.HiddenFor(x => x[i].Name)
            @Html.DisplayFor(x => x[i].Name)
        </td>
        <td>
            @Html.HiddenFor(x => x[i].Surname)
            @Html.DisplayFor(x => x[i].Surname)
        </td>
        <td>
            @Html.ActionLink("Delete Client", "DeleteClient", new { id = Model[i].ClientID }, new { @class = "btn btn-danger" })
        </td>
        <td>
            @Html.ActionLink("Edit Client", "EditClient", new { id = Model[i].ClientID }, new { @class = "btn btn-default" })
        </td>
    </tr>
}

</table>
}

让我们说最初的客户是：

Name       Surname
Adam       Gnb
Brandon    Cook
Kevin      Ginger
Patrick    Star

现在当我输入＆＃34; g＆＃34;在clientInfo输入文本框中单击搜索按钮，它使用我输入的关键字正确显示客户端。输出是：

Name      Surname
Adam      Gnb
Kevin     Ginger

现在，当我点击＆＃34;按客户姓氏排序＆＃34;。所需的输出是：

Name      Surname
Kevin     Ginger
Adam      Gnb

但是post方法中的clients参数是持有客户＆＃34; Adam Gnb＆＃34;和＆＃34;布兰登库克＆＃34;由于某些原因。这就是输出为：

的原因

Name      Surname
Brandon   Cook
Adam      Gnb

似乎从视图中返回IList不会保存当前显示的客户端。我真的不知道如何解决这个问题。

修改1：

过滤方法：

public IEnumerable<ClientDTO> GetByClientInfo(string info)
    {
        if (info.Trim() == "")
            throw new ValidationException("Set the input textbox.", "");
        var mapper = new MapperConfiguration(cfg => cfg.CreateMap<Client, ClientDTO>()).CreateMapper();
        return mapper.Map<IEnumerable<Client>, List<ClientDTO>>(Database.Clients.Find(x => x.Name.ToLower().Contains(info.ToLower()) || x.Surname.ToLower().Contains(info.ToLower())));
    }

排序方法：

public IEnumerable<ClientDTO> SortBySurname(IEnumerable<ClientDTO> clients)
    {
        if (clients == null)
            throw new ValidationException("The client list is empty", "");

        var sortedClients = from client in clients
                            orderby client.Surname
                            select client;

        return sortedClients;
    }

发布方法：

[HttpPost]
    public ActionResult Index(IList<ClientViewModel> clients, string command, string clientInfo)
    {
        if(command.Equals("Sort by client name"))
        {
            var mapper = new MapperConfiguration(cfg => cfg.CreateMap<ClientViewModel, ClientDTO>()).CreateMapper();
            var mapperReverse = new MapperConfiguration(cfg => cfg.CreateMap<ClientDTO, ClientViewModel>()).CreateMapper();

            var sortedClients = clientService.SortByName(mapper.Map<IList<ClientViewModel>, List<ClientDTO>>(clients));
            var afterMap = mapperReverse.Map<IEnumerable<ClientDTO>, IList<ClientViewModel>>(sortedClients);
            return View("Index", afterMap);
        }
        else if(command.Equals("Sort by client surname"))
        {
            var mapper = new MapperConfiguration(cfg => cfg.CreateMap<ClientViewModel, ClientDTO>()).CreateMapper();
            var mapperReverse = new MapperConfiguration(cfg => cfg.CreateMap<ClientDTO, ClientViewModel>()).CreateMapper();

            var sortedClients = clientService.SortBySurname(mapper.Map<IList<ClientViewModel>, List<ClientDTO>>(clients));
            var afterMap = mapperReverse.Map<IEnumerable<ClientDTO>, IList<ClientViewModel>>(sortedClients);
            return View("Index", afterMap);
        }
        else
        {
            Session["input"] = clientInfo;
            IEnumerable<ClientDTO> clientDtos;
            try
            {
                clientDtos = clientService.GetByClientInfo(clientInfo);
                var mapper = new MapperConfiguration(cfg => cfg.CreateMap<ClientDTO, ClientViewModel>()).CreateMapper();
                var resultClients = mapper.Map<IEnumerable<ClientDTO>, IList<ClientViewModel>>(clientDtos);
                return View("Index", resultClients);
            }
            catch (ValidationException ex)
            {
                ViewBag.Error = ex.Message;
                if (clients == null)
                {
                    return View(new List<ClientViewModel>());
                }
                return View("Index", clients);
            }
        }
    }

Answer 1

看看这个link

尝试更改隐藏的输入以不使用Html帮助程序。导致它将post值绑定回输入控件。而是使用简单的html元素，如下面的

@for (var i = 0; i < Model.Count; i++)
{
    <input type="hidden" name="[@(i)].ClientId" value="@(Model[i].ClientId)" />
    <tr>
        <td>
            <input type="hidden" name="[@(i)].Name" value="@(Model[i].Name)" />
            @Html.DisplayFor(x => x[i].Name)
         </td>
         <td>
             <input type="hidden" name="[@(i)].Surname" value="@(Model[i].Surname)" />
             @Html.DisplayFor(x => x[i].Surname)
         </td>
         <td>
             @Html.ActionLink("Delete Client", "DeleteClient", new { id = Model[i].ClientID }, new { @class = "btn btn-danger" })
          </td>
          <td>
              @Html.ActionLink("Edit Client", "EditClient", new { id = Model[i].ClientID }, new { @class = "btn btn-default" })
          </td>
    </tr>
}

错误发布的模型列表ASP.NET MVC

1 个答案: