get hitted stack panel object from silverlight treeview.

Question

hi,

I have Silverlight TreeView with Stackpanel associated with each TreeViewItem.

on this stack panel i have framework elements such as text block,check box etc.
when I click on any one of the stack panel control, TreeViewItem Selected event gets called.
but I can not get exactly control was hit?
i referred following link:
http://stackoverflow.com/questions/6475242/capture-click-on-treeview-item
but in my case RoutedEventArgs e comes null.
any ideas on this issue?

- Shwetank

Answer 1

on this stack panel i have framework elements such as text block,check box etc.

Hi I suggest you to use silverlight two way binding to get the value of silverlight listboxitem.

please refer to the code below:

 

<UserControl x:Class="SilverlightApplication212.MainPage"
    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"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk">

    <Grid x:Name="LayoutRoot" Background="White">
        <sdk:TreeView Height="200" HorizontalAlignment="Left" Margin="10,10,0,0" Name="treeView1" VerticalAlignment="Top" Width="120" SelectedItemChanged="treeView1_SelectedItemChanged">
            <sdk:TreeView.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <CheckBox IsChecked="{Binding IsCheck, Mode=TwoWay}"></CheckBox>
                        <TextBlock Text="{Binding ItemValue, Mode=TwoWay}"/>
                    </StackPanel>
                </DataTemplate>
            </sdk:TreeView.ItemTemplate>
        </sdk:TreeView>
    </Grid>
</UserControl>

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.ComponentModel;

namespace SilverlightApplication212
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
            List<ListItem> list = new List<ListItem>()
            { new ListItem(){ IsCheck=true, ItemValue="1"},
                new ListItem(){ IsCheck=false, ItemValue="2"},
                new ListItem(){ IsCheck=true, ItemValue="3"},
                new ListItem(){ IsCheck=false, ItemValue="4"}};
            treeView1.ItemsSource = list;
        }

        private void treeView1_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
        {
            //breakpoint to see the value
        }
    }
    public class ListItem : INotifyPropertyChanged
    {
        private bool isCheck = false;
        private string itemValue = string.Empty;
        public event PropertyChangedEventHandler PropertyChanged;
        private void NotifyPropertyChanged(String info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }
        public bool IsCheck {
            get
            {
                return this.isCheck;
            }

            set
            {
                if (value != this.isCheck)
                {
                    this.isCheck = value;
                    NotifyPropertyChanged("IsCheck");
                }
            }
        }
        public string ItemValue
        {
            get
            {
                return this.itemValue;
            }

            set
            {
                if (value != this.itemValue)
                {
                    this.itemValue = value;
                    NotifyPropertyChanged("ItemValue");
                }
            }
        }


    }
}

 

 Hope helpful