Getting the values of TextBox from a data bound ListBox - windows-phone-7

Question

I need to get the values from Listbox selected items. Note that, the data templates are in data bound. here is the xaml:
<ListBox Name="AppointmentResultsData" ItemsSource="{Binding}" Height="650" Width="480" Margin="24,0,0,0" Foreground="#CBF7FA" SelectionChanged="AppointmentResultsData_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding Path=Subject, Mode=TwoWay}" TextWrapping="Wrap" FontSize="30" Grid.Column="0" Grid.Row="1"/>
<Grid Grid.Column="0" Grid.Row="2">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="{Binding Path=Account.Name}" Grid.Column="0" Grid.Row="1" FontSize="28"/>
<TextBlock Text="Start : " Grid.Column="0" FontSize="22" Grid.Row="2"/>
<TextBlock Text="{Binding Path=StartTime}" FontSize="22" Grid.Column="1" Grid.Row="2"/>
<TextBlock Text="End : " Grid.Column="0" Grid.Row="3" FontSize="22"/>
<TextBlock Text="{Binding Path=EndTime}" Grid.Column="1" FontSize="22" Grid.Row="3"/>
<TextBlock Text="Location : " Grid.Column="0" Grid.Row="4" FontSize="22"/>
<TextBlock Text="{Binding Path=Location}" Grid.Column="1" FontSize="22" Grid.Row="4"/>
<TextBlock Text="Status : " Grid.Column="0" FontSize="22" Grid.Row="5"/>
<TextBlock Text="{Binding Path=Status}" Grid.Column="1" FontSize="22" Grid.Row="5"/>
</Grid>
<TextBlock Text=" "/>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I need values of the textboxes in selection changed event.I have tried like this...
private void AppointmentResultsData_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
//SelectedEvent seleted = AppointmentResultsData.SelectedItem as SelectedEvent;
if (AppointmentResultsData.SelectedIndex == -1)
return;
ListBoxItem currentSelectedListBoxItem = this.AppointmentResultsData.ItemContainerGenerator.ContainerFromIndex(AppointmentResultsData.SelectedIndex) as ListBoxItem;
if (currentSelectedListBoxItem == null)
return;
// Iterate whole listbox tree and search for this items
TextBox nameBox = helperClass.FindDescendant<TextBox>(currentSelectedListBoxItem);
TextBlock nameBlock = helperClass.FindDescendant<TextBlock>(currentSelectedListBoxItem);
MessageBox.Show(nameBlock.Text + " " + nameBox.Text);
}
But it didn't work !

Answer 1

Solved it !
private void AppointmentResultsData_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var listBoxItem = AppointmentResultsData.ItemContainerGenerator.ContainerFromIndex(AppointmentResultsData.SelectedIndex) as ListBoxItem;
var txtBlk = FindVisualChildByType<TextBlock>(listBoxItem, "txtLocation");
MessageBox.Show(txtBlk.Text);
}
T FindVisualChildByType<T>(DependencyObject element, String name) where T : class
{
if (element is T && (element as FrameworkElement).Name == name)
return element as T;
int childcount = VisualTreeHelper.GetChildrenCount(element);
for (int i = 0; i < childcount; i++)
{
T childElement = FindVisualChildByType<T>(VisualTreeHelper.GetChild(element, i), name);
if (childElement != null)
return childElement;
}
return null;
}

Answer 2

Suppose you have a list of class(MyClass) objects which you have databinded to listbox
Add a handler gesturelistener tap to the datatemplate
In the handler do this:
private void ItemClickedEventHandler(object sender, Microsoft.Phone.Controls.GestureEventArgs e)
{
MyClass clickedMyclass = (MyClass)((System.Windows.Controls.Grid)sender).DataContext;
}
you have the object of the current selected item and you can access all the class variables. eg(StartTime etc.)

Answer 3

Well you are casting it to the wrong type, this should work :
private void AppointmentResultsData_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var listBoxItem = AppointmentResultsData.SelectedItem as ListBoxItem;
TextBox nameBox = listBoxItem .FindName("nameYourTextBox") as TextBox;
TextBlock nameBlock = dd.FindName("nameYourTextBlock") as TextBlock;
MessageBox.Show(nameBlock.Text + " " + nameBox.Text);
}
of course you need to add the Name to your TextBox and TextBlock
<TextBlock x:Name="nameYourTextBlock Text="{Binding Path=Account.Name}" Grid.Column="0" Grid.Row="1" FontSize="28"/>
Plus I don't see any TextBox in your XAML.