Partial View with parametrized prefix for controls names

Question

I have a BarEditor.ascx, that can be called from diffent places.

<%@ Control Language=\"C#\" Inherits=\"System.Web.Mvc.ViewUserControl

        

Answer 1

You should to learn about Model Mapping in ASP.Net MVC. Everything in the asp.net mvc page will be rendered to html control therefore don't distinguish between controls in <% Html.RenderPartial("BarEditor", ViewData["bar"]); %> and <% Html.RenderPartial("BarEditor", ViewData["baz"]); %>

Answer 2

just create a ViewModel class for your BarEditor and make it strongly typed to this new class

e.g.

namespace ViewModel {
    public class BarEditor {

        string Prefix { get; set; }
        Models.Bar Bar { get; set; }
    }
}

now you create your textbox in BarEditor.ascx like this

<%= Html.TextBox(Model.Prefix + ".a") %> 

and in your view you include the BarEditor like that

 <form action="update">
    <div>
        <% Html.RenderPartial("BarEditor", new ViewModel.BarEditor { Prefix = "Bar", Bar = ViewData["bar"]}); %>
    </div>
    <div>
        <% Html.RenderPartial("BarEditor", new ViewModel.BarEditor { Prefix = "Baz", Bar = ViewData["baz"]}); %>
    </div>
    <input type="submit" value="Submit" />
 </form>

hth

Answer 3

Why not create a model for the view? Your view would then need to be a strongly typed view using the data class FormView.

public class FormView
{
    string Bar {get; set;}
    string Baz {get; set;}
}

Then in your view you can use

<form action="update">
    <div>
        <% Html.RenderPartial("BarEditor", Model.Bar); %>
    </div>
    <div>
        <% Html.RenderPartial("BarEditor", Model.Baz); %>
    </div>

    <input type="submit" value="Submit" />
</form>

Your controller becomes

public ActionResult Update(FormView MyForm)
{
    ... = MyForm.Bar;

    ... = MyForm.Baz;
}

Answer 4

I would pass a string ("baz" or "bar", etc) with my ViewData when calling the user control. Have the html.textbox get its name from the text passed and its value from the value passed.