Ticket Q402230
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UpdateModel throws exception when using a DevExpress Combobox

created 13 years ago

[HttpPost]

public ActionResult Index([ModelBinder(typeof(DevExpressEditorsBinder))] IndexModel model)

{
            var initialData = GenerateInitialData();

UpdateModel(initialData);

return View(initialData);
        }

This controller throws an InvalidOperationException on the UpdateModel line when the view contains a DevExpress combobox. Do you know what is causing this?

I’m attaching a project to demonstrate to problem.

Thanks,

Aske

Answers

created 13 years ago (modified 13 years ago)

Hello Aske,
It is necessary to use the DevExpressEditorsBinder object instance as a default model binder to make our MVC editors accept values from the client side in a proper way. The UpdateModel method doesn't use the ModelBinder attribute of your action.
So, we can set the default binder in the Application_Start event handler in the Global.asax.cs file, for example.

Code
protected void Application_Start() { ModelBinders.Binders.DefaultBinder = new DevExpressEditorsBinder(); ... }

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