創建視圖MVC3中的其他模型的對象組成的模型

Question

我有一個模型和該模型的一個枚舉，我把它放在一起在asp.net mvc3中的視圖模型就像這樣。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.ComponentModel.DataAnnotations; 


namespace FuelPortal.Models.DBModels 
{ 
    public class UserDBModel 
    { 

     public int userId { get; set; } 

     [Required, Display(Name = "User Name")] 
     public string userName { get; set; } 

     [Required, Display(Name = "Password")]   
     public string password { get; set; } 

     [Required, Display(Name = "First Name")] 
     public string firstName { get; set; } 

     [Required, Display(Name = "Last Name")] 
     public string lastName { get; set; } 

     [Required, Display(Name = "Email")] 
     public string email { get; set; } 

     [Display(Name = "Phone")] 
     public string phone { get; set; } 

     [Display(Name = "Account Expiration Date(Optional)")] 
     public DateTime expireDate { get; set; } 

     [Display(Name = "Password Expiration Date")] 
     public DateTime passwordExpireDate { get; set; } 

     [Display(Name = "Last Date Modified")] 
     public DateTime DateModified { get; set; } 

    } 
} 

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using FuelPortal.Models.DBModels; 

namespace FuelPortal.Models.ViewModels 
{ 
    public class UserMaintenanceViewModel 
    { 

     public UserDBModel user = new UserDBModel(); 
     public List<UserDBModel> userList = new List<UserDBModel>(); 
    } 
} 

現在我強烈地鍵入一個視圖來使用視圖模型。

@model FuelPortal.Models.ViewModels.UserMaintenanceViewModel 
<div class="frmBG"> 
     @using (Ajax.BeginForm(new AjaxOptions { UpdateTargetId = "wrapperData" })) 
     { 

       <h5>Create New User</h5> 
       <br /> 
       <table cellpadding="2" cellspacing="10" border="0"> 
       <tr><td> 
       <div class="editor-label"> 
        @Html.LabelFor(model => model.user.userName) 
       </div></td><td> 

       <div class="editor-field"> 
        @Html.EditorFor(model => model.user.userName) 
        @Html.ValidationMessageFor(model => model.user.userName) 
       </div></td></tr> 

       <tr><td> 
       <div class="editor-label"> 
        @Html.LabelFor(model => model.user.password) 
       </div></td><td> 
       <div class="editor-field"> 
        @Html.PasswordFor(model => model.user.password) 
        @Html.ValidationMessageFor(model => model.user.password) 
       </div></td></tr> 

       <tr><td> 
       <div class="editor-label"> 
        @Html.LabelFor(model => model.user.firstName) 
       </div></td><td> 
       <div class="editor-field"> 
        @Html.EditorFor(model => model.user.firstName) 
        @Html.ValidationMessageFor(model => model.user.firstName) 
       </div></td></tr> 

       <tr><td> 
       <div class="editor-label"> 
        @Html.LabelFor(model => model.user.lastName) 
       </div></td><td> 
       <div class="editor-field"> 
        @Html.EditorFor(model => model.user.lastName) 
        @Html.ValidationMessageFor(model => model.user.lastName) 
       </div></td></tr> 

       <tr><td> 
       <div class="editor-label"> 
        @Html.LabelFor(model => model.user.email) 
       </div></td><td> 
       <div class="editor-field"> 
        @Html.EditorFor(model => model.user.email) 
        @Html.ValidationMessageFor(model => model.user.email) 
       </div></td></tr> 

       <tr><td> 
       <div class="editor-label"> 
        @Html.LabelFor(model => model.user.phone) 
       </div></td><td> 
       <div class="editor-field"> 
        @Html.EditorFor(model => model.user.phone) 
        @Html.ValidationMessageFor(model => model.user.phone) 
       </div></td></tr> 

       <tr><td> 
       <div class="editor-label"> 
        @Html.LabelFor(model => model.user.expireDate) 
       </div></td><td> 
       <div class="editor-field"> 
        @Html.EditorFor(model => model.user.expireDate) 
        @Html.ValidationMessageFor(model => model.user.expireDate) 
       </div></td></tr> 

       <tr><td></td><td> 
       <p> 
        <input type="submit" value="" class="create" /><input type="button" value="" class="close_tab"/> 
       </p></td></tr> 
       </table> 
     } 
    </div> 

由於某些原因，它不會在視圖模型中填充對象。所以，當我創建一個後動作（UserMaintenanceViewModel模型）的所有值都爲null。像這樣..

[HttpPost] 
     public ActionResult CreateUser(UserMaintenanceViewModel model) 
     { 
      try 
      { 
       /// TODO: Add insert logic here 
       var result = repository.insertNewUser(Session["UserId"].ToString(), model.user.UserName, model.user.Password, model.user.FirstName, 
                 model.user.LastName, model.user.Email, model.user.Phone, model.user.ExpireDate); 
       // If result > 0 user insert successful 

另外，如果我切換到通過一個（的FormCollection形式）獲得回發我看到html元素的名稱是「user.UserName」而不是預期的「用戶名」。任何指導將不勝感激我覺得我應該能夠做到這一點。

非常感謝

Answer 1

如果你有一個複雜的視圖模型這是你所擁有的，那麼你必須確保在構造函數來創建對象的實例。您可以將信息添加到任何子對象，因爲它現在有一個實例。

public class MyViewModel 
{ 


    public MyViewModel() 
    { 
     Customer= new CustomerViewModel(); 
     Address = new AddressViewModel(); 
    } 

    public int OrderNumber{ get; set; } 
    public CustomerViewModel Customer { get; set; } 
    public AddressViewModel Address { get; set; } 

} 

}