WrapPanel.ItemHeight Eigenschaft

Definition

Ruft einen Wert ab, der die Höhe sämtlicher Elemente in einem WrapPanel angibt, oder legt diesen fest.Gets or sets a value that specifies the height of all items that are contained within a WrapPanel.

public:
 property double ItemHeight { double get(); void set(double value); };
[System.ComponentModel.TypeConverter(typeof(System.Windows.LengthConverter))]
public double ItemHeight { get; set; }
member this.ItemHeight : double with get, set
Public Property ItemHeight As Double

Eigenschaftswert

Das Double, das die einheitliche Höhe aller Elemente innerhalb des WrapPanel darstellt.The Double that represents the uniform height of all items that are contained within the WrapPanel. Der Standardwert ist NaNsein.The default value is NaN.

Attribute

Beispiele

Im folgenden Beispiel wird veranschaulicht, wie die ItemHeight -Eigenschaft Extensible Application Markup Language (XAML)Extensible Application Markup Language (XAML)in festgelegt wird.The following example demonstrates how to set the ItemHeight property in Extensible Application Markup Language (XAML)Extensible Application Markup Language (XAML).

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" WindowTitle="WrapPanel Properties Sample">
  <Border HorizontalAlignment="Left" VerticalAlignment="Top" BorderBrush="Black" BorderThickness="2">
        <WrapPanel Orientation="Horizontal" Background="Azure" ItemWidth="25" ItemHeight="25" Height="200" Width="200">
            <Button Width="200">Button 1</Button>
            <Button>Button 2</Button>
            <Button>Button 3</Button>
        </WrapPanel>
  </Border>    
</Page>

Im folgenden Beispiel wird veranschaulicht, wie die ItemHeight -Eigenschaft mithilfe von Code festgelegt wird.The following example demonstrates how to set the ItemHeight property by using code.


// Create the application's main window
mainWindow = gcnew System::Windows::Window();
mainWindow->Title = "WrapPanel Sample";


// Instantiate a new WrapPanel and set properties
myWrapPanel = gcnew WrapPanel();
myWrapPanel->Background = Brushes::Azure;
myWrapPanel->Orientation = Orientation::Horizontal;
myWrapPanel->ItemHeight = 25;

myWrapPanel->ItemWidth = 75;
myWrapPanel->Width = 150;
myWrapPanel->HorizontalAlignment = HorizontalAlignment::Left;
myWrapPanel->VerticalAlignment = VerticalAlignment::Top;

// Define 3 button elements. Each button is sized at width of 75, so the third button wraps to the next line.
btn1 = gcnew Button();
btn1->Content = "Button 1";
btn2 = gcnew Button();
btn2->Content = "Button 2";
btn3 = gcnew Button();
btn3->Content = "Button 3";

// Add the buttons to the parent WrapPanel using the Children.Add method.
myWrapPanel->Children->Add(btn1);
myWrapPanel->Children->Add(btn2);
myWrapPanel->Children->Add(btn3);

// Add the WrapPanel to the MainWindow as Content
mainWindow->Content = myWrapPanel;
mainWindow->Show();


// Create the application's main window
mainWindow = new System.Windows.Window();
mainWindow.Title = "WrapPanel Sample";


// Instantiate a new WrapPanel and set properties
myWrapPanel = new WrapPanel();
myWrapPanel.Background = System.Windows.Media.Brushes.Azure;
myWrapPanel.Orientation = Orientation.Horizontal;
myWrapPanel.Width = 200;
myWrapPanel.HorizontalAlignment = HorizontalAlignment.Left;
myWrapPanel.VerticalAlignment = VerticalAlignment.Top;

// Define 3 button elements. The last three buttons are sized at width 
// of 75, so the forth button wraps to the next line.
btn1 = new Button();
btn1.Content = "Button 1";
btn1.Width = 200;
btn2 = new Button();
btn2.Content = "Button 2";
btn2.Width = 75;
btn3 = new Button();
btn3.Content = "Button 3";
btn3.Width = 75;
btn4 = new Button();
btn4.Content = "Button 4";
btn4.Width = 75;

// Add the buttons to the parent WrapPanel using the Children.Add method.
myWrapPanel.Children.Add(btn1);
myWrapPanel.Children.Add(btn2);
myWrapPanel.Children.Add(btn3);
myWrapPanel.Children.Add(btn4);

// Add the WrapPanel to the MainWindow as Content
mainWindow.Content = myWrapPanel;
mainWindow.Show();

WindowTitle = "WrapPanel Sample"

' Instantiate a new WrapPanel and set properties
Dim myWrapPanel As New WrapPanel()
myWrapPanel.Background = Brushes.Azure
myWrapPanel.Orientation = Orientation.Horizontal

myWrapPanel.Width = 200
myWrapPanel.HorizontalAlignment = Windows.HorizontalAlignment.Left
myWrapPanel.VerticalAlignment = Windows.VerticalAlignment.Top

' Define 3 button elements. The last three buttons are sized at width 
' of 75, so the forth button wraps to the next line.
Dim btn1 As New Button()
btn1.Content = "Button 1"
btn1.Width = 200
Dim btn2 As New Button()
btn2.Content = "Button 2"
btn2.Width = 75
Dim btn3 As New Button()
btn3.Content = "Button 3"
btn3.Width = 75
Dim btn4 As New Button()
btn4.Content = "Button 4"
btn4.Width = 75

' Add the buttons to the parent WrapPanel using the Children.Add method.
myWrapPanel.Children.Add(btn1)
myWrapPanel.Children.Add(btn2)
myWrapPanel.Children.Add(btn3)
myWrapPanel.Children.Add(btn4)

' Add the WrapPanel to the Page as Content
Me.Content = myWrapPanel

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" WindowTitle="WrapPanel Sample">
  <Border HorizontalAlignment="Left" VerticalAlignment="Top" BorderBrush="Black" BorderThickness="2">
        <WrapPanel Background="LightBlue" Width="200" Height="100">
            <Button Width="200">Button 1</Button>
            <Button>Button 2</Button>
            <Button>Button 3</Button>
            <Button>Button 4</Button>
        </WrapPanel>
  </Border>    
</Page>

Hinweise

Wenn diese Eigenschaft nicht festgelegt ist (oder wenn Sie Auto in XAML oder auf Double.NaN in Code festgelegt ist), ist die Größe der Layoutpartition gleich der gewünschten Größe des untergeordneten Elements.If this property is not set (or if it is set to Auto in XAML or to Double.NaN in code), the size of the layout partition is equal to the desired size of the child element.

Für ein untergeordnetes Element WrapPanel einer kann die Height-Eigenschaft explizit festgelegt sein.A child element of a WrapPanel may have its height property set explicitly. ItemHeightGibt die Größe der Layoutpartition an, die vom WrapPanel für das untergeordnete Element reserviert wird.ItemHeight specifies the size of the layout partition that is reserved by the WrapPanel for the child element. Folglich hat Vorrang vor ItemHeight der eigenen Höhe eines Elements.As a result, ItemHeight takes precedence over an element's own height.

Verwendung von XAML-AttributenXAML Attribute Usage

<object ItemHeight="double"/>  
- or -  
<object ItemHeight="qualifiedDouble"/>  
- or -  
<object ItemHeight="Auto"/>  

XAML-WerteXAML Values

doubledouble
Double

Zeichen folgen Darstellung eines Double Werts, der 0.0034 größer oder gleich, aber gleich oder kleiner als 160000ist.String representation of a Double value equal to or greater than 0.0034 but equal to or less than 160000. Ein nicht qualifizierter Wert wird in geräteunabhängigen Pixeln gemessen.An unqualified value is measured in device independent pixels. Zeichen folgen müssen nicht explizit Dezimalstellen enthalten.Strings need not explicitly include decimal points.

qualifiedDoublequalifiedDouble
Ein doppelter Wert Auto, wie oben beschrieben (ausgenommen), gefolgt von einem der folgenden Einheits spezifiken: in px,, cm, pt.A double value as described above, (excepting Auto) followed by one of the following unit specifiers: px, in, cm, pt.

px(Standard) istGeräteunabhängige Einheiten (1/96 Zoll pro Einheit)device-independent units (1/96th inch per unit)px (default) is Geräteunabhängige Einheiten (1/96 Zoll pro Einheit)device-independent units (1/96th inch per unit)

inist Zoll; 1In = = 96pxin is inches; 1in==96px

cmist Zentimeter; 1cm = = (96/2,54) pxcm is centimeters; 1cm==(96/2.54) px

ptist Punkte 1pt = = (96/72) pxpt is points; 1pt==(96/72) px

AutoAuto
Bewirkt, dass die Zeilenhöhe automatisch anhand der aktuellen Schriftart Merkmale bestimmt wird.Causes the line height is determined automatically from the current font characteristics. Entspricht einem-Eigenschafts Wert NaNvon.Equivalent to a property value of NaN.

Informationen zur AbhängigkeitseigenschaftDependency Property Information

BezeichnerfeldIdentifier field ItemHeightProperty
Metadateneigenschaften auf true festgelegtMetadata properties set to true AffectsMeasure

Gilt für:

Siehe auch