小编cyb*_*nic的帖子

我正在尝试制作一个UWP应用程序NavigationView.我的问题是找到一种方法来Header改变当前显示的页面.我的应用程序基于Microsoft UWP示例"AppUIBasics".在示例Header中,NavigationView节目总是"欢迎",因为它的硬编码但我希望它根据所选页面进行更改.

MainPage.xaml:

 <NavigationView x:Name="NavView"
                ItemInvoked="NavView_ItemInvoked"
                SelectionChanged="NavView_SelectionChanged"
                Loaded="NavView_Loaded"
                Canvas.ZIndex="0">

    <NavigationView.HeaderTemplate>
        <DataTemplate>
            <Grid Margin="24,10,0,0">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto"/>
                    <ColumnDefinition/>
                </Grid.ColumnDefinitions>
                <TextBlock x:Name="appTitle" Style="{StaticResource TitleTextBlockStyle}"
                       FontSize="28"
                       VerticalAlignment="Center"
                       Text="Welcome"/>
                <CommandBar Grid.Column="1"
                        HorizontalAlignment="Right"
                        VerticalAlignment="Top"
                        DefaultLabelPosition="Right"
                        Background="{ThemeResource SystemControlBackgroundAltHighBrush}">
                    <AppBarButton Label="Refresh" Icon="Refresh"/>
                    <AppBarButton Label="Import" Icon="Import"/>
                </CommandBar>
            </Grid>
        </DataTemplate>
    </NavigationView.HeaderTemplate>

    <NavigationView.MenuItems>
        <NavigationViewItem x:Uid="HomeNavItem" Content="" Tag="home">
            <NavigationViewItem.Icon>
                <FontIcon Glyph="&#xE10F;"/>
            </NavigationViewItem.Icon>
        </NavigationViewItem>
        <NavigationViewItemSeparator/>
        <NavigationViewItem x:Uid="ConnectionNavItem" Icon="world" Content="" Tag="connection"/>
        <NavigationViewItem x:Uid="CameraNavItem" Icon="video" Content="" Tag="camera"/>
    </NavigationView.MenuItems>

    <Frame x:Name="rootFrame" Margin="24">
        <Frame.ContentTransitions>
            <TransitionCollection>
                <NavigationThemeTransition/>
            </TransitionCollection> …