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Procedure: Inhoud horizontaal of verticaal uitlijnen in een StackPanel

In dit voorbeeld ziet u hoe u de Orientation van inhoud binnen een StackPanel element aanpast en ook hoe u de HorizontalAlignment en VerticalAlignment van onderliggende inhoud aanpast.

Voorbeeld

In het volgende voorbeeld worden drie ListBox elementen gemaakt in Extensible Application Markup Language (XAML). Elke ListBox vertegenwoordigt de mogelijke waarden van de Orientation, HorizontalAlignmenten VerticalAlignment eigenschappen van een StackPanel. Wanneer een gebruiker een waarde in een van de ListBox elementen selecteert, worden de bijbehorende eigenschap van de StackPanel en de onderliggende Button elementen gewijzigd.

    <ListBox VerticalAlignment="Top" SelectionChanged="changeOrientation" Grid.Row="2" Grid.Column="1" Width="100" Height="50" Margin="0,0,0,10">
        <ListBoxItem>Horizontal</ListBoxItem>
        <ListBoxItem>Vertical</ListBoxItem>
    </ListBox>

    <ListBox VerticalAlignment="Top" SelectionChanged="changeHorAlign" Grid.Row="2" Grid.Column="3" Width="100" Height="50" Margin="0,0,0,10">
        <ListBoxItem>Left</ListBoxItem>
        <ListBoxItem>Right</ListBoxItem>
        <ListBoxItem>Center</ListBoxItem>
        <ListBoxItem>Stretch</ListBoxItem>
    </ListBox>

    <ListBox VerticalAlignment="Top" SelectionChanged="changeVertAlign" Grid.Row="2" Grid.Column="5" Width="100" Height="50" Margin="0,0,0,10">
        <ListBoxItem>Top</ListBoxItem>
        <ListBoxItem>Bottom</ListBoxItem>
        <ListBoxItem>Center</ListBoxItem>
        <ListBoxItem>Stretch</ListBoxItem>
    </ListBox>

<StackPanel Grid.ColumnSpan="6" Grid.Row="3" Name="sp1" Background="Yellow">
    <Button>Button One</Button>
    <Button>Button Two</Button>
    <Button>Button Three</Button>
    <Button>Button Four</Button>
    <Button>Button Five</Button>
    <Button>Button Six</Button>
</StackPanel>

Het volgende code-behind-bestand definieert de wijzigingen in de gebeurtenissen die zijn gekoppeld aan de ListBox selectiewijzigingen. StackPanel wordt geïdentificeerd door de Namesp1.

private void changeOrientation(object sender, SelectionChangedEventArgs args)
    {
        ListBoxItem li = ((sender as ListBox).SelectedItem as ListBoxItem);
        if (li.Content.ToString() == "Horizontal")
        {
        sp1.Orientation = System.Windows.Controls.Orientation.Horizontal;
        }
        else if (li.Content.ToString() == "Vertical")
        {
        sp1.Orientation = System.Windows.Controls.Orientation.Vertical;
        }
    }

private void changeHorAlign(object sender, SelectionChangedEventArgs args)
    {
        ListBoxItem li = ((sender as ListBox).SelectedItem as ListBoxItem);
        if (li.Content.ToString() == "Left")
        {
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
        }
        else if (li.Content.ToString() == "Right")
        {
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Right;
        }
        else if (li.Content.ToString() == "Center")
        {
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
        }
        else if (li.Content.ToString() == "Stretch")
        {
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
        }
    }

private void changeVertAlign(object sender, SelectionChangedEventArgs args)
    {
        ListBoxItem li = ((sender as ListBox).SelectedItem as ListBoxItem);
        if (li.Content.ToString() == "Top")
        {
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Top;
        }
        else if (li.Content.ToString() == "Bottom")
        {
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Bottom;
        }
        else if (li.Content.ToString() == "Center")
        {
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Center;
        }
        else if (li.Content.ToString() == "Stretch")
        {
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Stretch;
        }
    }

Private Sub changeOrientation(ByVal sender As Object, ByVal args As SelectionChangedEventArgs)
    Dim li As ListBoxItem = CType(CType(sender, ListBox).SelectedItem, ListBoxItem)
    If (li.Content.ToString() = "Horizontal") Then
        sp1.Orientation = System.Windows.Controls.Orientation.Horizontal
    ElseIf li.Content.ToString() = "Vertical" Then
        sp1.Orientation = System.Windows.Controls.Orientation.Vertical
    End If
End Sub
Private Sub changeHorAlign(ByVal sender As Object, ByVal args As SelectionChangedEventArgs)
    Dim li As ListBoxItem = CType(CType(sender, ListBox).SelectedItem, ListBoxItem)
    If (li.Content.ToString() = "Left") Then
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Left
    ElseIf (li.Content.ToString() = "Right") Then
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Right
    ElseIf (li.Content.ToString() = "Center") Then
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Center
    ElseIf (li.Content.ToString() = "Stretch") Then
        sp1.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch
    End If
End Sub
Private Sub changeVertAlign(ByVal sender As Object, ByVal args As SelectionChangedEventArgs)
    Dim li As ListBoxItem = CType(CType(sender, ListBox).SelectedItem, ListBoxItem)
    If (li.Content.ToString() = "Top") Then
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Top
    ElseIf (li.Content.ToString() = "Bottom") Then
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Bottom
    ElseIf (li.Content.ToString() = "Center") Then
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Center
    ElseIf (li.Content.ToString() = "Stretch") Then
        sp1.VerticalAlignment = System.Windows.VerticalAlignment.Stretch
    End If
End Sub

Zie ook

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