FocusedElement is always getting null

[Uddhao]

Hello,

I using RadDataBoundListBox in mvvmcross WP app. I using Pivot for tabs, previously i have one viewmodel for all pivot item but now created child view models for all pivot items. Since i use DataContext property for child view model binging but getting problem to RadContextMenu. when Opening event fire of context menu then FocusedElement getting null .

  tktTappedItem is always null in this line.

  RadDataBoundListBoxItem tktTappedItem = e.FocusedElement as Telerik.Windows.Controls.RadDataBoundListBoxItem;

This is my code :

- test.xaml file :

  <phone:PivotItem x:Name="uiPivotTimeEntry" DataContext="{Binding TicketTimeEntryVM}" >
                <phone:PivotItem.Header>
                    <StackPanel Orientation="Horizontal">

                        <telerik:RadImageButton HorizontalAlignment="Center"  Margin="0, 20, 0, 0" VerticalAlignment="Center" Command="{Binding CmdTimeEntryAdd}" ButtonShape="Ellipse" RestStateImageSource="/Assets/Images/Add-New.png"/>

                        <TextBlock Text="time entries" />
                    

                    </StackPanel>

                </phone:PivotItem.Header>

                <telerik:RadDataBoundListBox x:Name="uiTimeEntryList" ItemsSource="{Binding TicketTimeEntries}" ItemTemplate="{StaticResource TimeEntryItemTemplate}" EmptyContent="There are no time entries to display">

                    <telerikPrimitives:RadContextMenu.ContextMenu>
                        <telerikPrimitives:RadContextMenu OpenGesture="Hold" Opening="uiTicketTimeEntryMenu_Opening" >
                            <telerikPrimitives:RadContextMenuItem Content="edit" Tap="onTicketTimeEntryEdit_Tap"  />
                            <telerikPrimitives:RadContextMenuItem Content="delete" Tap="onTicketTimeEntryDelete_Tap" />
                        </telerikPrimitives:RadContextMenu>
                    </telerikPrimitives:RadContextMenu.ContextMenu>

                </telerik:RadDataBoundListBox>
            </phone:PivotItem>

 

- test.xaml.cs

public partial class TicketEditHomeView : MvxPhonePage
    {
       public TicketEditHomeView()
        {
            InitializeComponent();

            // Set the Context menu...
          
            RadContextMenu.SetFocusedElementType(this.uiTimeEntryList, typeof(RadDataBoundListBox));
         }
       
         
        /// <summary>
        /// TicketTimeEntry context menu opening
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void uiTicketTimeEntryMenu_Opening(object sender, Telerik.Windows.Controls.ContextMenuOpeningEventArgs e)
        {
            try
            {
                // This tktTappedItem is getting null
                RadDataBoundListBoxItem tktTappedItem = e.FocusedElement as Telerik.Windows.Controls.RadDataBoundListBoxItem;
                if (tktTappedItem != null)
                {
                    ticketTimeEntryDataContext = tktTappedItem.DataContext;
                }


                if (tktTappedItem == null)
                {
                    e.Cancel = true;
                }
            }
            catch { }
            finally
            {
                if (tktTappedItem != null)
                {
                    tktTappedItem = null;
                }
            }
        }


        /// <summary>
        /// Fire when click on Edit menu item
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void onTicketTimeEntryEdit_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            this.ViewModel.TicketTimeEntryVM.CmdTimeEntrySelected.Execute(ticketTimeEntryDataContext);
        }


        /// <summary>
        /// Fire when click on Delete menu item
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void onTicketTimeEntryDelete_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            this.ViewModel.TicketTimeEntryVM.CmdTimeEntryDeleted.Execute(ticketTimeEntryDataContext);
        }
 }

Thank you.

[Uddhao]

-I figured out where i am going wrong. While setting focused element type in constructor i am using RadDataBoundListBox instead of RadDataBoundListBoxItem.

Here is right code :
public TicketEditHomeView()

{

InitializeComponent();

// Set the Context menu...

RadContextMenu.SetFocusedElementType(this.uiTimeEntryList, typeof(RadDataBoundListBoxItem));

}

0down voteunaccept

-I figured out where i am going wrong. While setting focused element type in constructor i am using RadDataBoundListBox instead of RadDataBoundListBoxItem. Here is right code : public TicketEditHomeView() { InitializeComponent(); // Set the Context menu... RadContextMenu.SetFocusedElementType(this.uiTimeEntryList, typeof(RadDataBoundListBoxItem)); }

0down voteunaccept

-I figured out where i am going wrong. While setting focused element type in constructor i am using RadDataBoundListBox instead of RadDataBoundListBoxItem. Here is right code : public TicketEditHomeView() { InitializeComponent(); // Set the Context menu... RadContextMenu.SetFocusedElementType(this.uiTimeEntryList, typeof(RadDataBoundListBoxItem)); }

0down voteunaccept

-I figured out where i am going wrong. While setting focused element type in constructor i am using RadDataBoundListBox instead of RadDataBoundListBoxItem. Here is right code : public TicketEditHomeView() { InitializeComponent(); // Set the Context menu... RadContextMenu.SetFocusedElementType(this.uiTimeEntryList, typeof(RadDataBoundListBoxItem)); }

0down voteunaccept

-I figured out where i am going wrong. While setting focused element type in constructor i am using RadDataBoundListBox instead of RadDataBoundListBoxItem. Here is right code : public TicketEditHomeView() { InitializeComponent(); // Set the Context menu... RadContextMenu.SetFocusedElementType(this.uiTimeEntryList, typeof(RadDataBoundListBoxItem)); }