修复Visual Studio XAML GUI中元素的位置

<Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="Auto"/>
            <ColumnDefinition Width="Auto"/>
        </Grid.ColumnDefinitions>
        <StackPanel Orientation="Vertical">
        <TextBlock Text="Xaml Gui" FontSize="25"/>
            <TextBlock Text="Try With this"/>
        </StackPanel>
        <StackPanel Grid.Row="1" Orientation="Vertical">
            <TreeView/>
            <TreeView/>
        </StackPanel>
        <StackPanel Grid.Row="1" Grid.Column="1" Orientation="Vertical">
            <ListBox Height="50" Width="100"/>
            <ListBox Height="50" Width="100"/>
        </StackPanel>
        <StackPanel Grid.Row="1" Grid.Column="2">
            <TextBlock Text="Put Your things here" FontSize="25"/>
            <TextBlock Text="Try it now " FontSize="25"/>
        </StackPanel>
    </Grid>