Get post data with unknown number of variables in ASP MVC

Question

I have an entity with a variable set of attributes named ExtendedProperty, these have a key and a value.

In my html razor view, I have this:

@if (properties.Count > 0)
{
    <fieldset>
        <legend>Extended Properties</legend>
            <table>
            @foreach (var prop in properties)
            {
                <tr>
                    <td>
                        <label for="[email protected]">@prop.Name</label>
                    </td>
                    <td>
                        <input type="text" name="[email protected]" 
                               value="@prop.Value"/>
                    </td>
               </tr>
            }
            </table>
        </fieldset>
}

How can I access this data on my controller once the user fills it in? Is there a way to do this so that I can use the model bindings instead of manual html?

EDIT = Please note that I'm still using a model, and there are other things in the form that do use things like @Html.EditFor(m => m.prop). But I couldn't find a way to integrate these variable properties in.

Thanks.

If you name the inputs Properties[0]....Properties[n], the model binder will convert this to an IEnumerable on the model named Properties — cadrell0
– cadrell0, Commented Jul 8, 2013 at 18:29
@elite5472 Please, take a look at my answer at stackoverflow.com/questions/17450772/…. I believe that it's the same problem. — Andre Calil
– Andre Calil, Commented Jul 8, 2013 at 18:37
@AndreCalil Thanks, but there is an issue that I also have. I have other fields too which are static. — elite5472
– elite5472, Commented Jul 8, 2013 at 18:43
@elite5472 I don't understand what you mean by static fields. Could you provide more details about your model? Also, note that you can use the notation Property[n].Name and Property[n].Value — Andre Calil
– Andre Calil, Commented Jul 8, 2013 at 18:47

John Verco · Accepted Answer · 2013-07-08 18:34:11Z

5

Have you tried using the FormCollection object passed to the controller method?

[HttpPost]
public ActionResult Index(FormCollection formCollection)
{
  foreach (string extendedProperty in formCollection)
  {
     if (extendedProperty.Contains("Property-"))
     {
       string extendedPropertyValue = formCollection[extendedProperty];
     }
  }

  ...
}

I would try traversing through the items in that collection.

answered Jul 8, 2013 at 18:34

John Verco

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Andre Calil · Accepted Answer · 2013-07-08 19:30:24Z

Let's suppose you have the following Model (ViewModel, I prefer):

public class ExtendedProperties
{
  public string Name { get; set; }
  public string Value { get; set; }

}

public class MyModel
{
  public ExtendedProperties[] Properties { get; set; }
  public string Name { get; set; }
  public int Id { get; set; }
}

You can bind this model to a view using a markup like:

@using (Html.BeginForm("YourAction", "YourController", FormMethod.Post))
{
  <input type="text" name="Name" />
  <input type="number" name="Id" />

  <input type="text" name="Properties[0].Name" />
  <input type="text" name="Properties[0].Value" />  
  ...
  <input type="text" name="Properties[n].Name" />
  <input type="text" name="Properties[n].Value" />  
}

Finally, your action:

[HttpPost]
public ActionResult YourAction(MyModel model)
{
  //simply retrieve model.Properties[0]
  //...
}

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