模型中的模型 - 在下拉列表中選擇項目？

所以我有一個問題，我想在視圖中使用多個模型，爲了使這個工作成爲可能，我使用了一個包含所有3個模型的模型。模型中的模型 - 在下拉列表中選擇項目？

LogStatisticsModel.cs

namespace ASD.Models 
{ 
    public class LogStatisticsModel 
    { 
     public LogModel LogModelObject { get; set; } 
     public StatisticsModel StatisticsModelObject { get; set; } 
     public LogModelVM LogModelVMObject { get; set;} 
    } 
}

我們開始了LogModelVM依然完美的作品，當我使用它，除了一個小細節來看，下拉的價值不遵循控制器在「SelectedCustomer」的名字下。但它現在試圖發送一個「LogModelVMObject.SelectedCustomer」。因此，傳遞的值爲null ..

_LogLayout.cshtml

@model ASD.Models.LogStatisticsModel 

@using (Ajax.BeginForm("LogPartialView", "LogModelsController", 
     new AjaxOptions 
     { 
      HttpMethod = "POST", 
      InsertionMode = InsertionMode.Replace, 
      UpdateTargetId = "divLogs", 
     }, new 
     { 
      id = "NewTableId" 
     })) 
     { 

     <p>@Html.TextBox("SearchString",null, new { @placeholder = "Message" })</p> 
     if (Roles.IsUserInRole(WebSecurity.CurrentUserName, "Admin")) 
     { 
     <p> 
     @Html.DropDownListFor(m => m.LogModelVMObject.SelectedCustomer, Model.LogModelVMObject.CustomerList, new {@id = "logdropdownlabel" }) 
     </p> 
     } 

     <p><input type="submit" class="standardbutton logsearch" name="submit" value="Search" /></p> 
     }

LogModelsController.cs

[HttpPost] 
     public PartialViewResult LogPartialView(string searchString, int? selectedCustomer, string currentMessageFilter, string currentCustomerFilter, int? page, string sortOrder) 
       LogModelVM LMVM = new LogModelVM(); 
       Customer = GetCustomerIds(); 
       LMVM.CurrentSort = sortOrder; 

       if (Session["myID"] != null) 
       { 
        myID = Session["myID"].ToString(); 
       } 
       else 
       { 
        myID = selectedCustomer.ToString(); 
       } 
       try 
       { 
        testID = Convert.ToInt32(myID); 
       } 
       catch (FormatException ex) 
       { 
        throw new FormatException("FormatException error in LogModelsController", ex); 
       } 

       if (searchString != null) 
       { 
        page = 1; 
       } 
       else 
       { 
        searchString = currentMessageFilter; 
        selectedCustomer = Convert.ToInt32(currentCustomerFilter); 
       } 

       LMVM.CurrentMessageFilter = searchString; 
       LMVM.CurrentCustomerFilter = Convert.ToInt32(selectedCustomer); 

       if ((String.IsNullOrEmpty(searchString) && !String.IsNullOrEmpty(selectedCustomer.ToString()))) 
       { 
        // Search a Customer ID but no message 
        // Search a Customer ID but no message, change page 
        if (selectedCustomer != 0) 
         message = db.GetLogsById(Convert.ToInt32(selectedCustomer)); 
        // You have not searched and change page 
        else 
         message = db.GetLogs(); 
       } 
       // Searched Customer ID and message 
       // Searched Customer ID and message, change paged 
       else if (!String.IsNullOrEmpty(searchString) && !String.IsNullOrEmpty(selectedCustomer.ToString())) 
       { 
        testID = Convert.ToInt32(selectedCustomer); 
        Session["myID"] = testID.ToString(); 
        message = db.GetLogsById(testID).Where(s => s.message.Contains(searchString)); 
       } 
       else 
       { 
        message = db.GetLogs(); 
       } 

       Session["mySearchString"] = searchString; 
       Session["mySearchString2"] = selectedCustomer; 

       //PageSize displays the maximum number of rows on each page 
       int pageSize = 10; 
       int pageNumber = (page ?? 1); 
       var logs = message.OrderByDescending(i => i.timeStamp).ToPagedList(pageNumber, pageSize); 
       foreach (var log in logs) 
        log.Name = Customer.Where(a => a.Value == log.customerId.ToString()).FirstOrDefault().Text; 
       LMVM.Logs = logs; 
       LMVM.CustomerList = Customer; 

       var model = new LogStatisticsModel 
       { 
        LogModelObject = new LogModel(), 
        StatisticsModelObject = new StatisticsModel(), 
        LogModelVMObject = LMVM 
       }; 

       return PartialView("_LogPartialLayout", model); 
     }

我應該如何獲取的價值給控制器現在？我假設我不能在控制器的函數中寫入「int？LogModelVMObject.SelectedCustomer」。

來源

2015-11-12 Erik Sellberg

您可以改寫這樣的Html.DropdownList：

@Html.DropDownList("SelectedCustomer", Model.LogModelVMObject.CustomerList, new { @id = "logdropdownlabel" })

通過手動輸入一個名稱作爲第一個參數，該名稱應在申請表時，您發佈的數據反饋給控制器。

來源

2015-11-12 08:50:03

模型中的模型 - 在下拉列表中選擇項目？

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