How to reference object in DataTemplate?

[Phil Zheng]

Please see the attached codes. I need to access "_options" from code behind to set its ItemsSource. How do I achieve that?

Thanks,
Phil

<Controls:RadWindow x:Class="Sketch.SilverUI.BadItemDlg"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:Controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation" mc:Ignorable="d"
    d:DesignHeight="223" d:DesignWidth="400" Height="400" Width="400" Header="Bad Items" WindowStartupLocation="CenterScreen" ResizeMode="NoResize" CanClose="False" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">

    <Controls:RadWindow.Resources>
        <DataTemplate x:Key="ComboResource">
            <Grid>
                <StackPanel Orientation="Horizontal" Margin="0, 5, 0, 0">
                    <telerik:RadComboBox ItemsSource="{Binding Path=AvailableItems}" Height="20" Width="100" DisplayMemberPath="DisplayName" SelectedIndex="{Binding Path=SelectedInx}" HorizontalAlignment="Center"></telerik:RadComboBox>
                </StackPanel>
            </Grid>
        </DataTemplate>
    </Controls:RadWindow.Resources>

    <Grid x:Name="LayoutRoot" Background="White" Height="369">


        <telerik:RadGridView Height="254" RowIndicatorVisibility="Collapsed" HorizontalAlignment="Left" Margin="25,63,0,0" Name="_grid" VerticalAlignment="Top" Width="325" AutoGenerateColumns="False">
            <telerik:RadGridView.Columns>


                <telerik:GridViewDataColumn Header="Available Items" Width="133">
                    <telerik:GridViewDataColumn.CellTemplate>
                        <DataTemplate>
                            <telerik:ItemsControl ItemTemplate="{StaticResource ComboResource}" HorizontalAlignment="Left" Name="_options"/>
                        </DataTemplate>
                    </telerik:GridViewDataColumn.CellTemplate>
                </telerik:GridViewDataColumn>
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>


    </Grid>
</Controls:RadWindow>

[Pavel Pavlov]

Hello Phil Zheng,

You may expose the items source for the _options ItemsControl  as a static resource on the user control.

Then you may bind the ItemsSource  with syntax like :
ItemsSource = "{Binding ... Source ={StaticResource ..}".

This in case you have the same items for each row.

In case you need to set the ItemsSource individually per row,
You will need to subscribe to the RowLoaded event of RadGridView. Within the event handler you get the row (e.Row)  and then -
You may find the instance of the Items control with something like :

var myItemsControl e.Row.ChildrenOfType<ItemsControl>().FirstOrDefault();

Kind regards,
Pavel Pavlov
the Telerik team

[Phil Zheng]

Thanks, that works.