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    <p>You should use partial views. I use the following approach:</p> <p>Use a view model so you're not passing your domain models to your views:</p> <pre><code>public class EditPersonViewModel { public int Id { get; set; } // this is only used to retrieve record from Db public string Name { get; set; } public string Age { get; set; } } </code></pre> <p>In your <code>PersonController:</code></p> <pre><code>[HttpGet] // this action result returns the partial containing the modal public ActionResult EditPerson(int id) { var viewModel = new EditPersonViewModel(); viewModel.Id = id; return PartialView("_EditPersonPartial", viewModel); } [HttpPost] // this action takes the viewModel from the modal public ActionResult EditPerson(EditPersonViewModel viewModel) { if (ModelState.IsValid) { var toUpdate = personRepo.Find(viewModel.Id); toUpdate.Name = viewModel.Name; toUpdate.Age = viewModel.Age; personRepo.InsertOrUpdate(toUpdate); personRepo.Save(); return View("Index"); } } </code></pre> <p>Next create a partial view called <code>_EditPersonPartial</code>. This contains the modal header, body and footer. It also contains the Ajax form. It's strongly typed and takes in our view model.</p> <pre><code>@model Namespace.ViewModels.EditPersonViewModel &lt;div class="modal-header"&gt; &lt;button type="button" class="close" data-dismiss="modal" aria-hidden="true"&gt;×&lt;/button&gt; &lt;h3 id="myModalLabel"&gt;Edit group member&lt;/h3&gt; &lt;/div&gt; &lt;div&gt; @using (Ajax.BeginForm("EditPerson", "Person", FormMethod.Post, new AjaxOptions { InsertionMode = InsertionMode.Replace, HttpMethod = "POST", UpdateTargetId = "list-of-people" })) { @Html.ValidationSummary() @Html.AntiForgeryToken() &lt;div class="modal-body"&gt; @Html.Bootstrap().ControlGroup().TextBoxFor(x =&gt; x.Name) @Html.Bootstrap().ControlGroup().TextBoxFor(x =&gt; x.Age) &lt;/div&gt; &lt;div class="modal-footer"&gt; &lt;button class="btn btn-inverse" type="submit"&gt;Save&lt;/button&gt; &lt;/div&gt; } </code></pre> <p></p> <p>Now somewhere in your application, say another partial _peoplePartial.cshtml etc:</p> <pre><code>&lt;div&gt; @foreach(var person in Model.People) { &lt;button class="btn btn-primary edit-person" data-id="@person.PersonId"&gt;Edit&lt;/button&gt; } &lt;/div&gt; // this is the modal definition &lt;div class="modal hide fade in" id="edit-person"&gt; &lt;div id="edit-person-container"&gt;&lt;/div&gt; &lt;/div&gt; &lt;script type="text/javascript"&gt; $(document).ready(function () { $('.edit-person').click(function () { var url = "/Person/EditPerson"; // the url to the controller var id = $(this).attr('data-id'); // the id that's given to each button in the list $.get(url + '/' + id, function (data) { $('#edit-person-container').html(data); $('#edit-person').modal('show'); }); }); }); &lt;/script&gt; </code></pre>
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    1. COThanks for your answer. However, why should I use a ViewModel instead of my initial model?
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    2. COThere's a number of reasons, check out this answer for an explanation http://stackoverflow.com/questions/4878937/why-should-i-use-view-models If you need any help with my answer just ask.
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    3. COThank you very much ! Indeed I have a little question : in your Ajax.Begin form, what does the "list-of-people" represent?
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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