ASP.NET MVC 2 RC: How to use the EditorFor to render correct name attributes for a List<>?
In the MVC RC 2 docs, we find:
Expression-based helpers that render input elements generate correct name attributes when the expression contains an array or collection index. For example, the value of the name attribute rendered by Html.EditorFor(m => m.Orders[i]) for the first order in a list would 开发者_开发百科be Orders[0].
Anyone care to link an example of the C# view code (using a List where the result can bind back to the Model upon post)?
Just as a reference, I use the following code to verify the model binds correctly round trip. It simply shows view that allows change, then displays a view with the edited data upon form submission.
[HandleError]
public class HomeController : Controller
{
public ActionResult Index()
{
var myStudents = new List<Student>();
myStudents.Add(new Student { Name = "Harry" });
myStudents.Add(new Student { Name = "Tom" });
myStudents.Add(new Student { Name = "Richard" });
var myClass = new Classroom {Students = myStudents};
return View(myClass); // EditorFor()
}
[HttpPost]
public ActionResult Index( Classroom myClass)
{
return View("IndexPost", myClass); // DisplayFor()
}
This code:
<% for (int count = 0; count < Model.Students.Count; count++ )
{ %><%=
Html.EditorFor(m => m.Students[count]) %><%
}
%>
Rendered this output:
<input class="text-box single-line" id="Students_0__Name" name="Students[0].Name" type="text" value="Harry" />
<input class="text-box single-line" id="Students_1__Name" name="Students[1].Name" type="text" value="Tom" />
<input class="text-box single-line" id="Students_2__Name" name="Students[2].Name" type="text" value="Richard" />
And when I posted the content, the display was this (because I have a Student.ascx):
<table>
<tr><td><span>Harry</span> </td></tr>
<tr><td><span>Tom</span> </td></tr>
<tr><td><span>Richard</span> </td></tr>
</table>
But that's it (I think). Next question is how to get rid of those name="" tags.
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