Anleitung: Positionierung der Kind-Elemente eines Gitternetzes

In diesem Beispiel wird gezeigt, wie Sie die Get- und Set-Methoden verwenden, die auf Grid definiert sind, um untergeordnete Elemente zu positionieren.

Beispiel

Im folgenden Beispiel wird ein übergeordnetes Grid Element (grid1) definiert, das drei Spalten und drei Zeilen enthält. Ein untergeordnetes Rectangle Element (rect1) wird zur Grid an Spaltenposition Null und Zeilenposition Null hinzugefügt. Button Elemente stellen Methoden dar, die aufgerufen werden können, um das Element innerhalb des RectangleGridElements neu zu positionieren. Wenn ein Benutzer auf eine Schaltfläche klickt, wird die zugehörige Methode aktiviert.

<Window  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="grid_getset_methods.Window1"
    Title="Grid Methods Sample">
    <Border BorderBrush="Black" Background="White" BorderThickness="2">
    <DockPanel VerticalAlignment="Top" HorizontalAlignment="Left" Margin="10">
      <TextBlock FontSize="20" FontWeight="Bold" DockPanel.Dock="Top">Grid Methods Sample</TextBlock>
      <TextBlock DockPanel.Dock="Top">Click the buttons on the left to reposition the Rectangle below using methods defined on Grid.</TextBlock>
        <Grid Margin="0,10,15,0" DockPanel.Dock="Left">
          <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
            <RowDefinition/>
          </Grid.RowDefinitions>
        <!-- <Snippet1> -->
          <StackPanel Grid.Column="0" Grid.Row="0" HorizontalAlignment="Left" Orientation="Vertical">
            <Button Click="setCol0">Move Rectangle to Column 0</Button>
            <Button Click="setCol1">Move Rectangle to Column 1</Button>
            <Button Click="setCol2" Margin="0,0,0,10">Move Rectangle to Column 2</Button>
            <Button Click="setRow0">Move Rectangle to Row 0</Button>
            <Button Click="setRow1">Move Rectangle to Row 1</Button>
            <Button Click="setRow2" Margin="0,0,0,10">Move Rectangle to Row 2</Button>
            <Button Click="setColspan">Span All Columns</Button>
            <Button Click="setRowspan">Span All Rows</Button>
            <Button Click="clearAll">Clear All</Button>
          </StackPanel>
        </Grid>
      <Grid DockPanel.Dock="Top" Margin="0,10,15,0" HorizontalAlignment="Left" Name="grid1" ShowGridLines="True" Width="400" Height="400" Background="LightSteelBlue">
        <Grid.ColumnDefinitions>
        <ColumnDefinition/>
        <ColumnDefinition/>
        <ColumnDefinition/>
      </Grid.ColumnDefinitions>
      <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
        <RowDefinition/>
      </Grid.RowDefinitions>
        
        <Rectangle Name="rect1" Fill="Silver" Grid.Column="0" Grid.Row="0"/>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="0" Grid.Row="0" Margin="5">Column 0, Row 0</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="1" Grid.Row="0" Margin="5">Column 1, Row 0</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="2" Grid.Row="0" Margin="5">Column 2, Row 0</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="0" Grid.Row="1" Margin="5">Column 0, Row 1</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="1" Grid.Row="1" Margin="5">Column 1, Row 1</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="2" Grid.Row="1" Margin="5">Column 2, Row 1</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="0" Grid.Row="2" Margin="5">Column 0, Row 2</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="1" Grid.Row="2" Margin="5">Column 1, Row 2</TextBlock>
        <TextBlock FontSize="15" HorizontalAlignment="Right" VerticalAlignment="Bottom" Grid.Column="2" Grid.Row="2" Margin="5">Column 2, Row 2</TextBlock>
      </Grid>
        <!-- </Snippet1> -->

      <TextBlock DockPanel.Dock="Top" Name="txt1"/>
      <TextBlock DockPanel.Dock="Top" Name="txt2"/>
      <TextBlock DockPanel.Dock="Top" Name="txt3"/>
      <TextBlock DockPanel.Dock="Top" Name="txt4"/>
    </DockPanel>
    </Border>	
</Window>

Im folgenden CodeBehind-Beispiel werden die Methoden behandelt, die die Schaltflächenereignisse Click auslösen. Im Beispiel werden diese Methodenaufrufe auf TextBlock Elemente geschrieben, die verwandte Get-Methoden verwenden, um die neuen Eigenschaftswerte als Zeichenfolgen auszugeben.

private void setCol0(object sender, RoutedEventArgs e)
{
    Grid.SetColumn(rect1, 0);
    txt1.Text = "Rectangle is in Column " + Grid.GetColumn(rect1).ToString();
}
private void setCol1(object sender, RoutedEventArgs e)
{
    Grid.SetColumn(rect1, 1);
    txt1.Text = "Rectangle is in Column " + Grid.GetColumn(rect1).ToString();
}
private void setCol2(object sender, RoutedEventArgs e)
{
    Grid.SetColumn(rect1, 2);
    txt1.Text = "Rectangle is in Column " + Grid.GetColumn(rect1).ToString();
}
private void setRow0(object sender, RoutedEventArgs e)
{
    Grid.SetRow(rect1, 0);
    txt2.Text = "Rectangle is in Row " + Grid.GetRow(rect1).ToString();
}
private void setRow1(object sender, RoutedEventArgs e)
{
    Grid.SetRow(rect1, 1);
    txt2.Text = "Rectangle is in Row " + Grid.GetRow(rect1).ToString();
}
private void setRow2(object sender, RoutedEventArgs e)
{
    Grid.SetRow(rect1, 2);
    txt2.Text = "Rectangle is in Row " + Grid.GetRow(rect1).ToString();
}
private void setColspan(object sender, RoutedEventArgs e)
{
    Grid.SetColumnSpan(rect1, 3);
    txt3.Text = "ColumnSpan is set to " + Grid.GetColumnSpan(rect1).ToString();
}
private void setRowspan(object sender, RoutedEventArgs e)
{
    Grid.SetRowSpan(rect1, 3);
    txt4.Text = "RowSpan is set to " + Grid.GetRowSpan(rect1).ToString();
}

Private Sub setCol0(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetColumn(rect1, 0)
    txt1.Text = "Rectangle is in Column " + Grid.GetColumn(rect1).ToString()
End Sub

Private Sub setCol1(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetColumn(rect1, 1)
    txt1.Text = "Rectangle is in Column " + Grid.GetColumn(rect1).ToString()
End Sub

Private Sub setCol2(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetColumn(rect1, 2)
    txt1.Text = "Rectangle is in Column " + Grid.GetColumn(rect1).ToString()
End Sub

Private Sub setRow0(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetRow(rect1, 0)
    txt2.Text = "Rectangle is in Row " + Grid.GetRow(rect1).ToString()
End Sub

Private Sub setRow1(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetRow(rect1, 1)
    txt2.Text = "Rectangle is in Row " + Grid.GetRow(rect1).ToString()
End Sub

Private Sub setRow2(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetRow(rect1, 2)
    txt2.Text = "Rectangle is in Row " + Grid.GetRow(rect1).ToString()
End Sub

Private Sub setColspan(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetColumnSpan(rect1, 3)
    txt3.Text = "ColumnSpan is set to " + Grid.GetColumnSpan(rect1).ToString()
End Sub
Private Sub setRowspan(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Grid.SetRowSpan(rect1, 3)
    txt4.Text = "RowSpan is set to " + Grid.GetRowSpan(rect1).ToString()
End Sub

Hier ist das fertige Ergebnis!

Siehe auch

• Grid
• Übersicht über Panel-Elemente