如何以 xamarin 形式从顶部删除 space?

How to remove the space from the top in xamarin form?

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="WindyBox1.InputPage">
    <ContentPage.Content>
        <StackLayout BackgroundColor="#2051fb">
            <Label Text="WindyBox"
                   FontSize="15"/>
            <CollectionView ItemsSource="{Binding Coolers}"
                            SelectionMode="Single"
                            BackgroundColor="#4fa1fb"
                            SelectionChanged="SelectChanged">
                <CollectionView.ItemTemplate>
                    <DataTemplate>
                        <Grid Padding="10"
                              RowDefinitions="Auto, *"
                              ColumnDefinitions="Auto, *">
                            <Image Source="Cooler.png"
                                   WidthRequest="80"
                                   HeightRequest="80"
                                   Grid.RowSpan="2"
                                   Grid.Row="0"
                                   Grid.Column="0"/>
                            <Label Text="{Binding Name}"
                                   Grid.Row="0"
                                   Grid.Column="1"/>
                            <Label Text="{Binding Condition}"
                                   TextColor="LightGreen"
                                   Grid.Row="1"
                                   Grid.Column="1"/>
                        </Grid>
                    </DataTemplate>
                </CollectionView.ItemTemplate>
            </CollectionView>
            <Button Text="Подключиться к устройству"
                    x:Name="ConnectDeviceButton"
                    IsEnabled="False"
                    Clicked="ConnectDeviceButton_Clicked"/>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

我在顶部得到了一个 space。 如果你开什么药,it still remains。你能告诉我如何从上面删除这个未占用的 space 吗? 我想在那里放一个按钮或其他东西。 enter image description here

它是导航栏。使用 NavigationPage.HasNavigationBar="false"

禁用它
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="WindyBox1.InputPage"
             NavigationPage.HasNavigationBar="false">