Selected Item Pivot for Windows Phone 8.1 - xaml

Question

I have a problem selecting an item from a Pivot in Windows Phone 8.1. I have a CommandBar that makes navigation between pages belonging to Pivot, and have programmed change in the onClick SelectedItem of each button and the display changes to each page. When I start the application all the buttons, making debug SelectedItem change is made and no exception but the display does not change page. The strangest thing is that when I navigate manually between pages with navigation Pivot and then pressed a button on the CommandBar pages work. The problem only happens when I start the application.
It can happen ?, As I can solve ?, I'm a little frustrated xD.
Here is the code of Pivot and Command Bar:
<Pivot x:Name="pivotMain" Style="{StaticResource PivotStyleMain}" Margin="0,0,-0.333,0" >
<PivotItem x:Name="pvtMenu" Header="Online" DataContext="{Binding Groups}">
<ListView
AutomationProperties.AutomationId="ItemListViewSection3"
AutomationProperties.Name="Items In Group"
SelectionMode="None"
IsItemClickEnabled="True"
ItemsSource="{Binding lstMenu}"
ItemTemplate="{StaticResource StandardTripleLineItemTemplate}"
ItemClick="ItemView_ItemClick"
ContinuumNavigationTransitionInfo.ExitElementContainer="True">
</ListView>
</PivotItem>
<PivotItem x:Name="pvtMenuOffline" Header="Offline" DataContext="{Binding Groups}">
<ListView
AutomationProperties.AutomationId="itmListViewMenuOffline"
AutomationProperties.Name="Items In Group"
SelectionMode="None"
IsItemClickEnabled="True"
ItemsSource="{Binding lstMenuOffline}"
ItemTemplate="{StaticResource StandardTripleLineItemTemplatePathImage}"
ContinuumNavigationTransitionInfo.ExitElementContainer="True" ItemClick="ListView_ItemClick">
</ListView>
</PivotItem>
<PivotItem x:Name="pvtInfo" Header="Información">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ListView>
<TextBlock Height="Auto" Width="Auto" FontSize="25" Foreground="#7D7D7D">Encuéntranos en</TextBlock>
<Border Background="{ThemeResource ListViewItemPlaceholderBackgroundThemeBrush}" Margin="0,9.5,0,0" Grid.Column="0" HorizontalAlignment="Left">
<Image Source="Assets/fb.png" Stretch="UniformToFill" AutomationProperties.Name="imgFcbk" Height="Auto" Width="300" Tapped="Image_Tapped"/>
</Border>
<Border Background="{ThemeResource ListViewItemPlaceholderBackgroundThemeBrush}" Margin="0,9.5,0,0" Grid.Column="0" HorizontalAlignment="Left">
<Image Source="Assets/tw.png" Stretch="UniformToFill" AutomationProperties.Name="imgFcbk" Height="Auto" Width="300" Tapped="Image_Tapped_1"/>
</Border>
<Border Background="{ThemeResource ListViewItemPlaceholderBackgroundThemeBrush}" Margin="0,9.5,0,0" Grid.Column="0" HorizontalAlignment="Left">
<Image Source="Assets/yt.png" Stretch="UniformToFill" AutomationProperties.Name="imgFcbk" Height="Auto" Width="300" Tapped="Image_Tapped_2"/>
</Border>
</ListView>
<Border Background="Transparent" Grid.Column="0" Grid.Row="1" HorizontalAlignment="Left" Padding="10">
<Image Source="Assets/componetes dispositivos moviles-22.png" Stretch="UniformToFill" AutomationProperties.Name="imgFcbk" Height="Auto"/>
</Border>
</Grid>
</PivotItem>
</Pivot>
</Grid>
<Page.BottomAppBar>
<CommandBar>
<CommandBar.PrimaryCommands>
<AppBarButton x:Name="barBtnHome" Label="Online" Command="{Binding SomeCommand}" IsDoubleTapEnabled="False" IsHoldingEnabled="False" IsRightTapEnabled="False" Click="barBtnHome_Click">
<AppBarButton.Icon>
<BitmapIcon UriSource="Assets/earth53.png"/>
</AppBarButton.Icon>
</AppBarButton>
<AppBarButton x:Name="barBtnOffline" Label="Offline" Command="{Binding SomeCommand}" IsDoubleTapEnabled="False" IsHoldingEnabled="False" IsRightTapEnabled="False" Click="barBtnOffline_Click">
<AppBarButton.Icon>
<BitmapIcon UriSource="Assets/earth85.png"/>
</AppBarButton.Icon>
</AppBarButton>
<AppBarButton x:Name="barBtnAbout" Label="Info" Command="{Binding SomeCommand}" IsHoldingEnabled="False" IsDoubleTapEnabled="False" IsRightTapEnabled="False" Click="barBtnAbout_Click">
<AppBarButton.Icon>
<BitmapIcon UriSource="Assets/appbar.information.circle.png"/>
</AppBarButton.Icon>
</AppBarButton>
</CommandBar.PrimaryCommands>
</CommandBar>
</Page.BottomAppBar>
And here is the code behind the onclick:
private void barBtnHome_Click(object sender, RoutedEventArgs e)
{
this.pivotMain.SelectedItem = this.pvtMenu;
}
private void barBtnAbout_Click(object sender, RoutedEventArgs e)
{
this.pivotMain.SelectedItem = this.pvtInfo;
}
private void barBtnOffline_Click(object sender, RoutedEventArgs e)
{
this.pivotMain.SelectedItem = this.pvtMenuOffline;
}
Much appreciate your help.

Answer 1

User SelectedIndex instead of SelectedItem.
private void barBtnHome_Click(object sender, RoutedEventArgs e)
{
this.pivotMain.SelectedIndex = 0;
}
private void barBtnAbout_Click(object sender, RoutedEventArgs e)
{
this.pivotMain.SelectedIndex = 1;
}
private void barBtnOffline_Click(object sender, RoutedEventArgs e)
{
this.pivotMain.SelectedIndex = 2;
}