MultiSelect modelbinding in a loop and form post

[erwin]

Hi,

I have a list of objects in my model

   public class SoftwareItemPropertiesViewModel
    {
....
        public List<Annotation> Annotations { get; set; } = new List<Annotation>();
....

 

that I render to multiple multiselect like so:

for (var i = 0; i < Model.Annotations.Count; i++)
      {

          <div class="form-group">
              @Html.Label(Model.Annotations[i].Name)
              <div class="col-sm-10">
                  @(Html.Kendo().MultiSelectFor(m => m.Annotations[i].SelectedOptions)
                        .DataTextField("Name")
                        .DataValueField("Value")
                        .BindTo(Model.Annotations[i].Options)
                        .Placeholder(Model.Annotations[i].Placeholder)
                        )
              </div>
          </div>

      }

 

On post of the form, I can see that the selected data is there as as expected in Annotations[0].SelectedOptions:

Annotations%5B0%5D.SelectedOptions: 4
Annotations%5B0%5D.SelectedOptions: 5
Cost: 515
Description: adfasdf
Guid: 40f339ed-b1e8-4a46-a987-8d5d79ec0be0
Name: abcasdfsadf
OwnerNotes:
SelectedOwners: 1
SelectedOwners: 2
Version:

 

However, the selected Values are not populated back in the Model object that I receive.

Annotations List is populated with 1 Annotation as expected, but Annotations[0].SelectedOptions is not populated.

There is another Multiselect directly bound to the model and here I see Selected values in the model as expected.

What am I missing?

Regards Erwin

 

[erwin]

Never mind. Missed the obvious.

Annotations[]SelectedOptions needs to be a public Property. A Public field does not work but also raises no errors with the compiler nor the model binder.

Regards

Erwin

[Dimitar]

Hello Erwin,

I have reviewed the provided configuration and it looks valid. You are also correct that selectedOption need to be a public property in order for the binding to work.

Can you confirm if you managed to successfully resolve the issue with this modification?

Regards,
Dimitar
Progress Telerik

[erwin]

Hi Dimitar,

sorry if I was unclear in my last message. Changing from public Field to public Property enabled the Binding and everything works as expected now.

What I find a bit confusing is that referencing a public field works in the View but cannot be populated by the standard model binder. But that is standard ASP.NET behaviour, nothing specific to Telerik.

Regards

 

Erwin