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Nullable property in grid doesn't update (when bound to combobox)

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Grid

This is a migrated thread and some comments may be shown as answers.

Adam asked on 14 Jun 2013, 09:15 PM

I uploaded a repro project demonstrating the issue I'm having here: http://www.mediafire.com/download/s1ba31xy83naa8c/NullableComboboxInGrid.zip

Have a grid for a model with a nullable int (representing a FK relationship)

public class NullableFkModel

{

[ScaffoldColumn(false)]

public int Id { get; set; }

public string Name { get; set; }

[UIHint("Fk")]

public int? FkId { get; set; }

}

Editor template for the nullable FK property is:

@model int?

@(Html.Kendo()

.ComboBoxFor(m => m)

.DataValueField("Value")

.DataTextField("Text")

.BindTo(new [] { new SelectListItem() { Text = "Joe Blow", Value = "1"}, new SelectListItem() { Text = "Jane Doe", Value = "2"}, new SelectListItem() { Text = "Batman", Value = "3"}})

.Filter(FilterType.Contains))

Grid is pretty basic:

@(Html.Kendo()

.Grid<NullableFkModel>()

.Name("Grid")

.Columns(columns =>

{

columns.Bound(item => item.Name);

columns.Bound(item => item.FkId);

columns.Command(command => command.Edit());

})

.DataSource(ds => ds.Ajax()

.Model(model => model.Id(m => m.Id))

.Read(read => read.Action("Nullable_Read", "Demo"))

.Create(create => create.Action("Nullable_Create", "Demo"))

.Update(update => update.Action("Nullable_Update", "Demo"))

)

.ToolBar(commands => commands.Create())

.Editable(edit => edit.Mode(GridEditMode.PopUp)))

When editing, everything works fine. But when adding, the FkId is not bound to the combobox and the value is not update when the combobox is changed. You can see that it is not updated in the grid and it is not posted back to the controller.

When using the exact same setup with a non-nullable property it works as expected. I have a demo of both in the uploaded project.

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