將參數傳遞給Html.ActionLink

Question

我試圖將一個參數傳遞給Index視圖中的Create @ Html.ActionLink，但是我遇到了一些困難。

我有一個地址控制器，用戶在訪問索引視圖時可以看到特定人員的地址。我想將此PersonID傳遞給「創建」視圖，以便他們在創建新地址時不必選擇或輸入該人員。我的ActionLink的是這樣的 -

@Html.ActionLink("Create New", "Create", new { id = Model.[PersonID is not a choice]}) 

我的問題是，經過模型是PersonID是不是一種選擇。我不知道如何將PersonID獲取到AddressController中的Create函數。

我試着跟着帖子 - Passing a parameter to Html.ActionLink when the model is IEnumerable<T> - 他們有同樣的問題。第一個答案看起來像是一個可能的解決方案，但是我無法複製他們創建的模型，並且當我將這些部分放入Address模型中時，我無法複製他們在控制器中執行的代碼。還有其他解決方案嗎？

我的地址模式 -

public partial class Address 
{ 
    public int AddressID { get; set; } 
    public int PersonID { get; set; } 
    [Display(Name="Address")] 
    public string Address1 { get; set; } 
    [Display(Name = "Address 2")] 
    public string Address2 { get; set; } 
    public string City { get; set; } 
    [Display(Name="State")] 
    public string StateAbbr { get; set; } 
    [Display(Name = "Zip Code")] 
    public string Zip { get; set; } 

    public virtual Person Person { get; set; } 

    public List<Address> Address { get; set; } 
} 

我AddressController指數

public ActionResult Index(int id) 
    { 
     var addresses = db.Addresses.Include(a => a.Person) 
      .Where(a => a.PersonID == id); 

     Person person = db.People.Find(id); 

     ViewBag.FullName = person.FirstName + " " + person.LastName; 

     person.PersonID = id; 

     return View(addresses.ToList()); 
    } 

地址索引視圖 -

@model IEnumerable<OpenBurn.Models.Address> 

@{ 
    ViewBag.Title = "Address"; 
} 

<h2>Address</h2> 

<p> 
    @Html.ActionLink("Create New", "Create", new { id = .PerosnID }) 
</p> 

<h3 style="color: #008cba;"> @ViewBag.FullName </h3> 

<table class="table"> 
<tr> 
    <th> 
     @Html.DisplayNameFor(model => model.Address1) 
    </th> 
    <th> 
     @Html.DisplayNameFor(model => model.Address2) 
    </th> 
    <th> 
     @Html.DisplayNameFor(model => model.City) 
    </th> 
    <th> 
     @Html.DisplayNameFor(model => model.StateAbbr) 
    </th> 
    <th> 
     @Html.DisplayNameFor(model => model.Zip) 
    </th> 

    <th></th> 
</tr> 

@foreach (var item in Model) { 
<tr> 
    <td> 
     @Html.DisplayFor(modelItem => item.Address1) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.Address2) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.City) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.StateAbbr) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.Zip) 
    </td> 

    <td> 
     @Html.ActionLink("Edit", "Edit", new { id=item.AddressID }) | 
     @Html.ActionLink("Details", "Details", new { id=item.AddressID }) | 
     @Html.ActionLink("Delete", "Delete", new { id=item.AddressID }) 
    </td> 
</tr> 
} 

</table> 

Answer 1

由於@Html.ActionLink語法不是foreach循環中，你明明不能使用IEnumerable<OpenBurn.Models.Address>作爲模型。您需要一個新的模型類，其中包含一個包含這些地址記錄的屬性和一個包含PersonID值的屬性。您還應該使用相同的模型類來傳遞FullName值，而不是使用ViewBag。我建議下面的模型類

public class AddressIndexModel 
{ 
    public AddressIndexModel() 
    { 
     this.Addresses = new List<Address>(); 
    } 

    public int PersonID { get; set; } 
    public string FullName { get; set; } 
    public List<Address> Addresses { get; set; } 
} 

那麼你的控制器視圖切換到該

public ActionResult Index(int id) 
{ 
    var addresses = db.Addresses.Include(a => a.Person) 
     .Where(a => a.PersonID == id); 

    Person person = db.People.Find(id); 

    AddressIndexModel model = new AddressIndexModel(); 
    model.PersonID = id; 
    model.FullName = person.FirstName + " " + person.LastName; 
    model.Addresses = addresses.ToList(); 

    return View(model); 
} 

，並切換到下面

@model AddressIndexModel 

@{ 
    ViewBag.Title = "Address"; 
} 

<h2>Address</h2> 

<p> 
    @Html.ActionLink("Create New", "Create", new { id = Model.PersonID }) 
</p> 

<h3 style="color: #008cba;"> @Model.FullName </h3> 

<table class="table"> 
<tr> 
    <th> 
     Address 
    </th> 
    <th> 
     Address 2 
    </th> 
    <th> 
     City 
    </th> 
    <th> 
     State 
    </th> 
    <th> 
     Zip Code 
    </th> 

    <th></th> 
</tr> 

@foreach (var item in Model.Addresses) { 
<tr> 
    <td> 
     @Html.DisplayFor(modelItem => item.Address1) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.Address2) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.City) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.StateAbbr) 
    </td> 
    <td> 
     @Html.DisplayFor(modelItem => item.Zip) 
    </td> 

    <td> 
     @Html.ActionLink("Edit", "Edit", new { id=item.AddressID }) | 
     @Html.ActionLink("Details", "Details", new { id=item.AddressID }) | 
     @Html.ActionLink("Delete", "Delete", new { id=item.AddressID }) 
    </td> 
</tr> 
} 

</table>