ASP.NET MVC删除动态创建的视图

Question

I have a view model in my ASP.NET MVC app that holds a List of objects. Each of these objects are visualized using EditorTemplate. Using a dropdown I can add dynamically new object to the List on postback. The problem is when I try to remove a specific element from the list.

public class MyViewModel
{
     public List<MyModel> Items { get; set; }

     public MyViewModel()
     {
          this.Items = new List<MyModel>();
     }
}

public class MyModel
{
    public int Id { get; set; }
    public string Text { get; set; } // I bind this to UI using EditorFor html helper
}

HomeController:

[HttpPost]
public ActionResult Index(MyViewModel myViewModel)
{
     myViewModels.Items.Add(new MyModel());  // Simulate initializing the Id and Text properties

     return View(myViewModel);
}

Then in Index.cshtml:

if (Model.Items != null)
{
    @Html.EditorFor(m => Model.Items);  // EditorTemplate is used here...
}

So in my template file, called Item.cshtml I have:

@model MVCApp.Models.MyModel

<div>
    @Html.HiddenFor(m => m.Id)
    @Html.EditorFor(m => m.Text)

    <span class="deleteItem" data-item-id="@Model.Id">Delete</span>
</div>

Now I don't know how to process the deletion of the specific item when I click on "Delete". My goal is to have the item deleted from the collection in the controller ('Items' list property of the view model). I can delete the div element using jQuery but the property would not be removed from the 'Items' collection and I would like to avoid jQuery to preserve data integrity between server and client side. I tried to call another action in HomeController called Remove(int? id) where the id parameter is the Id property of 'MyModel', but I need to pass 'MyViewModel' object in Remove action in order to access the 'Items' list, remove the element and then redirect to 'Index' action with the changed collection. How can I achieve that? Thanks!

Update

Answer 1

If you are looking to do it using. You can submit form using submit button and pass in the id to remove and then calling controller action and code accordingly.