RadGridView with hierarchy - create combobox column in child grid with a grid inside

[CQT]

Hello!

I'm struggling from a few days with a problem in my wpf application:

I have to create a structure similar to the one in telerik demos of which I attach a screenshot. It is a RadGridView with hierarchy.

In child grid I have to add a RadComboBox Column and it works fine until I simply put some values in this combo. My task Is to modify the Data Template of the Comboboxcolumn and insert a radgridview.

I'm facing a lot of problem in  doing that and in binding data to the Grid. I succesfully create the structure but I'm not able to bind data in code behind.

This is a piece of my code, and attached is the example structure I want to upgrade.

<telerik:RadGridView  Margin="15,5,15,5" Name="gvRequest" Height="auto" Width="Auto"
                                 xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
                                 telerik:StyleManager.Theme="Simple" AutoGenerateColumns="False"
                                 IsFilteringAllowed="False" FlowDirection="LeftToRight" ShowGroupPanel="False">
        <telerik:RadGridView.Columns>
            <telerik:GridViewDataColumn UniqueName="Codice" Header="Codice" Width="Auto" />
            <telerik:GridViewDataColumn UniqueName="UtenteCreazione" Header="UtenteCreazione" Width="Auto" />
            <telerik:GridViewDataColumn UniqueName="IDContatore" Header="IDContatore" Width="Auto" />
            <telerik:GridViewDataColumn UniqueName="ModuloStampa" Header="ModuloStampa" Width="Auto" />
        </telerik:RadGridView.Columns>
        <telerik:RadGridView.HierarchyChildTemplate>
            <DataTemplate>
                <StackPanel DataContext="{x:Null}">
                    <telerik:RadGridView CanUserReorderColumns="False" Name="gvOrder"  CanUserInsertRows="True" ShowInsertRow="True" CanUserDeleteRows="True"
                                             CanUserFreezeColumns="False" ShowGroupPanel="False" AutoGenerateColumns="False" ItemsSource="{Binding}"
                                             Loaded="OnChildGridLoaded" FlowDirection="LeftToRight" IsFilteringAllowed="False" ShowColumnHeaders="True" ColumnBackground="AliceBlue" HorizontalContentAlignment="Right" ClipToBounds="True">
                        <telerik:RadGridView.Columns>
                            <telerik:GridViewDataColumn UniqueName="id" Header="id" Width="Auto" />
                            <telerik:GridViewDataColumn UniqueName="Data" Header="Data" Width="Auto" />
                            <telerik:GridViewDataColumn UniqueName="UtenteCreazione" Header="UtenteCreazione" Width="Auto" />
                            <telerik:GridViewComboBoxColumn UniqueName="numero" Header="Numero" Width="Auto"
                                                            DataMemberBinding="{Binding numero, Mode=TwoWay}"
                                                            DisplayMemberPath="NomeUtente"  SelectedValueMemberPath="IDUtente" SortMemberPath="NomeUtente" SortingState="Ascending" />
<telerik:GridViewComboBoxColumn UniqueName="numero2" Header="Numero2" Width="Auto"
                                                            DataMemberBinding="{Binding numero, Mode=TwoWay}"
                                                            ItemsSource="{Binding Source={StaticResource CustomersViewSourcefil}}"
                                                            DisplayMemberPath="{Binding Path=RadGrigliaUtenti.NomeUtente}">
                                <telerik:GridViewComboBoxColumn.ItemTemplate>
                                    <DataTemplate>
                                        <telerik:RadGridView FilteringMode="FilterRow" x:Name="RadGrigliaUtenti" AutoGenerateColumns="False" ShowGroupPanel="False" CanUserFreezeColumns="False"
                                             RowIndicatorVisibility="Collapsed" IsReadOnly="True" MinWidth="300" MaxWidth="600"
                                             IsFilteringAllowed="True" ItemsSource="{Binding Source={StaticResource CustomersViewSource}}"
                                             Height="150" SelectedItem="{Binding Path=numero}" >
                                            <telerik:RadGridView.Columns>
                                                <telerik:GridViewDataColumn Header="IDUtente" Width="120" DataMemberBinding="{Binding IDUtente}" IsReadOnly="True"></telerik:GridViewDataColumn>
                                                <telerik:GridViewDataColumn Header="NomeUtente" Width="*" DataMemberBinding="{Binding NomeUtente}" IsReadOnly="True"></telerik:GridViewDataColumn>
                                            </telerik:RadGridView.Columns>
                                        </telerik:RadGridView>

                                    </DataTemplate>
                                </telerik:GridViewComboBoxColumn.ItemTemplate>
</telerik:GridViewComboBoxColumn>
                        </telerik:RadGridView.Columns>
                    </telerik:RadGridView>
                </StackPanel>
            </DataTemplate>
        </telerik:RadGridView.HierarchyChildTemplate>
    </telerik:RadGridView>
</Window>

Someone has a sample project or some suggestions to accomplish this task?

[Yoan]

Hello Simone,

Generally, this is not quite recommended since placing such a heavy control inside an editing template might cause some degradation of the performance. However, you could check this blog post for a reference.

Regards,
Yoan
Telerik