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BlockUIContainer.Child Property

Gets or sets the UIElement hosted by the BlockUIContainer.

Namespace:  System.Windows.Documents
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
Public Property Child As UIElement
<object>
  <UIElement .../>
</object>

Property Value

Type: System.Windows.UIElement
The UIElement hosted by the BlockUIContainer.

An BlockUIContainer may directly host no more than one UIElement child. However, the child element hosted by an BlockUIContainer may host children of its own.

In XAML, wrapping a UIElement in an BlockUIContainer is equivalent to setting that UIElement as the value of the Child property.

The following example shows how to use the BlockUIContainer elements to host UIElement elements within flow content.

<FlowDocument ColumnWidth="400">
  <Section Background="GhostWhite">
    <Paragraph>
      A UIElement element may be embedded directly in flow content
      by enclosing it in a BlockUIContainer element.
    </Paragraph>
    <BlockUIContainer>
      <Button>Click me!</Button>
    </BlockUIContainer>
    <Paragraph>
      The BlockUIContainer element may host no more than one top-level
      UIElement.  However, other UIElements may be nested within the
      UIElement contained by an BlockUIContainer element.  For example,
      a StackPanel can be used to host multiple UIElement elements within
      a BlockUIContainer element.
    </Paragraph>
    <BlockUIContainer>
      <StackPanel>
        <Label Foreground="Blue">Choose a value:</Label>
        <ComboBox>
          <ComboBoxItem IsSelected="True">a</ComboBoxItem>
          <ComboBoxItem>b</ComboBoxItem>
          <ComboBoxItem>c</ComboBoxItem>
        </ComboBox>
        <Label Foreground ="Red">Choose a value:</Label>
        <StackPanel>
          <RadioButton>x</RadioButton>
          <RadioButton>y</RadioButton>
          <RadioButton>z</RadioButton>
        </StackPanel>
        <Label>Enter a value:</Label>
        <TextBox>
          A text editor embedded in flow content.
        </TextBox>
      </StackPanel>
    </BlockUIContainer>
  </Section>
</FlowDocument>

The following figure shows how this example renders.

Screenshot: UIElement embedded in flow content

The following example shows how to use the Child property programmatically.

Dim secx As New Section()
Dim par1 As New Paragraph(New Run(" Text to precede the button... "))
Dim par2 As New Paragraph(New Run(" Text to follow the button... "))

' Create a new button to be hosted in the section.
Dim buttonx2 As New Button()
buttonx2.Content = "Click me!"

' Create a new BlockUIContainer, and assign the button 
' as the UI container's child.
Dim uiCont2 As New BlockUIContainer()
uiCont2.Child = buttonx2

' Add the text runs and UI container to the paragraph, in order.
secx.Blocks.Add(par1)
secx.Blocks.Add(uiCont2)
secx.Blocks.Add(par2)

.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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