Question

I have swapped the core Lightswitch 2011 data grid control with the latest Telerik Silverlight RadGridView control.

As per their tutorials, I bind the grid columns as per normal.

However, in the core Lightswitch datagrid, if you bind to a string field that is a ChoiceList (e.g. Project Status – Value = 1, DisplayName = “In Progress”) then it automatically shows the Display NAme (e.g. “IN Progress”).

But in the Telerik RadGridView it shows the VALUE, not the DisplayName (e.g. 1 in the example above).

Here is the DataMemberBinding expression I use in the XAML customer control:

I assume the core Lightswitch DataGrid is getting it from the query somehow – I assumed it would be something like
Binding ProjectStatus.DisplayName but this does not work… (See screenshot)

        <telerik:GridViewDataColumn  ShowColumnWhenGrouped="False"
                                     Width="SizeToHeader"
                                     CellStyle="{StaticResource FormLabelValueTextStyle}"
                                     DataMemberBinding="{Binding ProjectStatus}">
            <telerik:GridViewDataColumn.Header>
                <TextBlock Style="{StaticResource HeaderCellTextBlockStyle}"
                           Text="Project Status" />
            </telerik:GridViewDataColumn.Header>
        </telerik:GridViewDataColumn>

    </telerik:RadGridView.Columns>
</Controls:RadGridView>

Answer 1

Choice Lists are a LightSwitch concept, they’re stored in the lsml file (one of the reasons I don’t use them), so I’m not surprised that it’s not available if you’re using a non-LS datagrid.

The way around this would be to use an actual lookup table instead of the choice list. Then you’d be able to bind to the entity’s properties.