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WrapPanel.ItemHeight Property

Gets or sets a value that specifies the height of all items that are contained within a WrapPanel.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

'Declaration
<TypeConverterAttribute(GetType(LengthConverter))> _
Public Property ItemHeight As Double
<object ItemHeight="double"/>
- or -
<object ItemHeight="qualifiedDouble"/>
- or -
<object ItemHeight="Auto"/>

XAML Values

double

Double

String representation of a Double value equal to or greater than 0.0034 but equal to or less than 160000. An unqualified value is measured in device independent pixels. Strings need not explicitly include decimal points.

qualifiedDouble

A double value as described above, (excepting Auto) followed by one of the following unit specifiers: px, in, cm, pt.

px (default) is device-independent units (1/96th inch per unit)

in is inches; 1in==96px

cm is centimeters; 1cm==(96/2.54) px

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

Auto

Causes the line height is determined automatically from the current font characteristics. Equivalent to a property value of NaN.

Property Value

Type: System.Double
The Double that represents the uniform height of all items that are contained within the WrapPanel. The default value is NaN.

Identifier field

ItemHeightProperty

Metadata properties set to true

AffectsMeasure

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.

A child element of a WrapPanel may have its height property set explicitly. ItemHeight specifies the size of the layout partition that is reserved by the WrapPanel for the child element. As a result, ItemHeight takes precedence over an element's own height.

The following example demonstrates how to set the ItemHeight property in 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>

The following example demonstrates how to set the ItemHeight property by using code.

            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>

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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