How to move gridview selected row up/down on KeyUp or Keydown press

[ajoua taha]

So as the title states, I'm trying to navigate between rows in a GridView when a cell* ( * : cell correspond to third row and quantity column in my case )  is editing by clicking up/down , so when i navigate up/down , the new selected row also have cell* editing   , here is my gridview

<telerik:RadGridView Grid.Row="2" Grid.ColumnSpan="3"
         x:Name="gridview"
         ItemsSource="{Binding CurrentDetailBLLs}"
         SelectedItem="{Binding SelectedCurrentDetailBLL,Mode=TwoWay}"
         SelectionMode="Extended"
         CanUserDeleteRows="True"
         CanUserInsertRows="True"
         IsReadOnly="False"
         IsFilteringAllowed="False"
         AutoGenerateColumns="False"
         GroupRenderMode="Flat"
         AutoExpandGroups="True"
         NewRowPosition="None"
         IsSynchronizedWithCurrentItem="True" KeyUp="dataGridView1_KeyUp">
            <!--SelectionUnit="FullRow"-->
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn
                            TextAlignment="Justify"
                            Width="auto"
                            HeaderTextAlignment="Center"
                            DataMemberBinding="{Binding Path=ProductID}"
                            Header="ProductCode" />
                <telerik:GridViewDataColumn
                            TextAlignment="Justify"
                            Width="auto"
                            HeaderTextAlignment="Center"
                            DataMemberBinding="{Binding Path=ProductName}"
                            Header="ProductName" IsReadOnly="True">
                </telerik:GridViewDataColumn>
                <telerik:GridViewDataColumn
                            TextAlignment="Center"
                                    Width="auto"
                            HeaderTextAlignment="Center"
                            DataMemberBinding="{Binding Path=Quantity}"
                            Header="Quantity"/>

            </telerik:RadGridView.Columns>

the attached image make clear what i am talking about .

help plz !

[Stefan Nenchev]

Hi Taha,

Thank you for the image and the code provided.

As the default TextBox handles the KeyDown and KeyUp events, it is not possible to use a Custom Keyboard Command Provider, which usually is the way to go in such scenarios. What you need to do is handle the PreviewKeyDown event of the RadGridView and perform the logic for pressing the Up and Down keys inside.

I have created a sample project that implements the desired behavior. Please, review it and update me if such approach would be useful. 

I will be looking forward to your reply.

Regards,
Stefan Nenchev
Telerik