為什么asp.net模型綁定器無法將字符串值映射到具有相同名稱的Object屬性

Question

我有一個名為Server的模型類，我創建了一個新的ServerToEdit viewModel類，如下所示： -

public class ServerToEdit
    {
        public Server Server { get; set; }
       [Required]
        public String IPAddress { get; set; }
    }

創建視圖的一部分是： -

    model TMS.ViewModels.ServerToEdit

    @* This partial view defines form fields that will appear when creating and editing entities *@
     @Html.AntiForgeryToken()
    <div class="editor-label">
        @Html.LabelFor(model => model.Server.CustomerName)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model =>model.Server.CustomerName)
        @Html.ValidationMessageFor(model =>model.Server.CustomerName)
    </div>
    <div class="editor-label">
       IP Address
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.IPAddress)
        @Html.ValidationMessageFor(model => model.IPAddress)
    </div>

IPAddress
<div class="editor-label">
    @Html.LabelFor(model =>model.Server.ILOIP)
</div>
<div class="editor-field">
    @Html.EditorFor(model =>model.Server.ILOIP)
    @Html.ValidationMessageFor(model =>model.Server.ILOIP)
</div>

Create actin方法是： -

[HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create(Server server, TechnologyIP technologyIP)
        {
           try 
           { 
               if (ModelState.IsValid) 
           {
                repository.InsertOrUpdateServer(server,technologyIP);
                repository.Save();
                return RedirectToAction("Index");
            }

但模型綁定器無法將我的視圖中的IPAddress字段綁定到TechnologyIP.IPAddress屬性？ 技術IP模型類是： -

public class TechnologyIP
    {
        public String IPAddress { get; set; }

        public int ID { get; set; }
    }

Answer 1

初看起來，我會想到這是因為您傳遞給視圖的模型與您要求的模型不同。 改變這一行：

public ActionResult Create(Server server, TechnologyIP technologyIP)

至

public ActionResult Create(ServerToEdit serverToEdit)

這一行：

repository.InsertOrUpdateServer(server,technologyIP);

至

repository.InsertOrUpdateServer(serverToEdit.Server, serverToEdit.technologyIP);

讓我們知道您的身體情況如何。