如何删除框架Xamarin形式之间的空白

Question

我以Xamarin形式创建网格，例如

   [![<StackLayout>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="*"/>
                <RowDefinition Height="*"/>
                <RowDefinition Height="*"/>
            </Grid.RowDefinitions>
        <Frame  HasShadow="True" CornerRadius="10" Margin="20,-40,20,0" Padding="0" HeightRequest="120" VerticalOptions="Start" Grid.Row="1" BackgroundColor="Gray">
                <Grid>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*"/>
                        <RowDefinition Height="*"/>
                    </Grid.RowDefinitions>
                    <StackLayout Grid.Row="0" HorizontalOptions="CenterAndExpand">
                        <Label Text="" FontSize="Large"/>
                    </StackLayout>
                    <StackLayout Grid.Row="1" HorizontalOptions="CenterAndExpand">
                        <Label Text=""/>    
                    </StackLayout> 
                </Grid>
        </Frame>
            <Frame HasShadow="True" CornerRadius="10" Margin="20,-40,20,0" Padding="0" HeightRequest="300" VerticalOptions="Center" Grid.Row="2" HorizontalOptions="Fill" BackgroundColor="Gray" >                
            </Frame>
            <Frame HasShadow="True" CornerRadius="10" Margin="20,-40,20,0" Padding="0" HeightRequest="100" VerticalOptions="Center" Grid.Row="3" HorizontalOptions="Fill" BackgroundColor="Gray">   
            </Frame>
        </Grid>
    </StackLayout>][1]][1]

1：

我要删除此空格吗？我是Xamarin的新手，所以有什么帮助。对不起，英语不好。

Answer 1