Question

 @using (Ajax.BeginForm("SaveItemAndProperties", "HomeBuilder",
        new AjaxOptions
        {
            UpdateTargetId = "divSaveItemAndProps",
            InsertionMode = InsertionMode.Replace               
        }))
    {
        @Html.EditorForModel()        
        <input type="submit" value="Submit" />            
    }

---

In Model which is called from EditorForModel

@Html.EditorFor(m => m.PropertyValues)

PropertyValues is a list of properties and is a calling a EditorTemplate.

From the Action I change the value and then try to update the data back to the View

[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post)]
public PartialViewResult SaveItemAndProperties(PropertyBuilderViewModel modelValues)
{
    //Change on property in modelValues
    return PartialView("PropertyBuilderControl", modelmodelValues);
}

When i am debugging i see the data propertly but it does not display in the view.
Any idea why it is doing so.

Answer 1

What are you changing in your action? HTML helpers such as TextBoxFor, HiddenFor, DropDownListFor, CheckBoxFor, … first look at ModelState when binding and after that in the model. So if in your controller action you intend to do something like this:

[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post)]
public PartialViewResult SaveItemAndProperties(PropertyBuilderViewModel modelValues)
{
    modelValues.Foo = "some new value";
    return PartialView("PropertyBuilderControl", modelmodelValues);
}

make sure you remove that value from the model state or you won’t see any updates once you render the view again:

[AcceptVerbs(HttpVerbs.Get | HttpVerbs.Post)]
public PartialViewResult SaveItemAndProperties(PropertyBuilderViewModel modelValues)
{
    ModelState.Remove("Foo");
    modelValues.Foo = "some new value";
    return PartialView("PropertyBuilderControl", modelmodelValues);
}