Listbox on one page calling SelectionChanged event handler of ListBox on AnotherPage?

I have a two pages say Main.xaml and Details.xaml.Each page has a ListBox and I am setting each of it to a collection in ViewModel(Same collection).The strange thing is that when i select an item in Details page it calls the SelectionChanged event handler on Main page and Details page.Is this a bug?

I have solved the problem by unhooking SelectionChanged eventhandler in OnNavigatedFrom() method.

EDIT

In Main.Xaml I have something like below:

<ListBox Name="MainDataListBox" Margin="8,113,8,8" ItemsSource="{Binding DataList}" SelectionChanged="MainDataListBox_SelectionChanged">
                <ListBox.ItemTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal"   >
                            <Border BorderThickness="3" BorderBrush="#A5FFFFFF" Width="80" Margin="0,20,0,20" Height="60">
                                <Image Source="{Binding ImageUrl, Mode=OneWay}"  VerticalAlignment="Stretch" Margin="0,0,0,0" Width="80" Height="60" Stretch="Fill" />
                            </Border>
                            <TextBlock TextWrapping="Wrap" Text="{Binding Title}" FontSize="40" FontWeight="Normal" VerticalAlignment="Center" Margin="30,0,0,0" />
                        </StackPanel>
                    </DataTemplate>
                </ListBox.ItemTemplate>
              </ListBox>

In Details.xaml also I have same kind of ListBox:

<ListBox Name="DetailDataListBox" Margin="8,113,8,8" ItemsSource="{Binding DataList}" SelectionChanged="DetailDataListBox_SelectionChanged">
                <ListBox.ItemTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal"   >
                            <Border BorderThickness="3" BorderBrush="#A5FFFFFF" Width="80" Margin="0,20,0,20" Height="60">
                                <Image Source="{Binding ImageUrl, Mode=OneWay}"  VerticalAlignment="Stretch" Margin="0,0,0,0" Width="80" Height="60" Stretch="Fill" />
                            </Border>
                            <TextBlock TextWrapping="Wrap" Text="{Binding Title}" FontSize="40" FontWeight="Normal" VerticalAlignment="Center" Margin="30,0,0,0" />
                        </StackPanel>
                    </DataTemplate>
                </ListBox.ItemTemplate>
              </ListBox>

Both of the Pages Main and Details have seperate EvenHandlers MainDataListBox_SelectionChanged and DetailDataListBox_SelectionChanged.

The problem is when i select an Item in Details Page MainDataListBox_SelectionChanged is called first and then DetailDataLi开发者_运维百科stBox_SelectionChanged. Also my viewmodel is a static one in App.cs and I am setting the data context of both these pages to same viewmodel.

Thanks and Regards

vaysage

As both listsboxes were bound to the same dataset a change in the selected time in one list would have affected the other.

Obviosuly you're found a work around but I'd recommend having a unique view model for each page. If the page is just a different way of displaying the same data use a single page and alter the display as appropriate. (Creating your own visual states may be a good way to do this.)