在masterDetailPage Xamarin中将底部工作表放在任何页面的顶部

<MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"
                  xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                  xmlns:views="clr-namespace:YourNamespace.Views"
                  x:Class="YourNamespace.Views.MainPage">

    <MasterDetailPage.Master>
        <views:MenuPage />
    </MasterDetailPage.Master>

    <MasterDetailPage.Detail>
        <NavigationPage>
            <x:Arguments>
                <views:DetailPage />
            </x:Arguments>
        </NavigationPage>
    </MasterDetailPage.Detail>

</MasterDetailPage>

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:views="clr-namespace:YourNamespace.Views"
             x:Class="YourNamespace.Views.DetailPage">

    <ContentPage.ToolbarItems>
        <ToolbarItem Text="按钮1" IconImageSource="icon1.png" Command="{Binding Button1Command}" />
        <ToolbarItem Text="按钮2" IconImageSource="icon2.png" Command="{Binding Button2Command}" />
    </ContentPage.ToolbarItems>

    <!-- 页面内容 -->

</ContentPage>