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ElementHost.Child Property

.NET Framework 4

Gets or sets the UIElement hosted by the ElementHost control.

Namespace:  System.Windows.Forms.Integration
Assembly:  WindowsFormsIntegration (in WindowsFormsIntegration.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
C#
C++
F#
VB
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[BrowsableAttribute(false)]
public UIElement Child { get; set; }
XAML Content Element Usage
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<object>
  <UIElement .../>
</object>

Property Value

Type: System.Windows.UIElement
The hosted Windows Presentation Foundation (WPF) element.

Only one element can be hosted, but Child can have any number of child elements.

The following code example demonstrates how to use the Child property to assign a hosted WPF element. For more information, see Walkthrough: Hosting a 3-D WPF Composite Control in Windows Forms.

C#
VB
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private void Form1_Load(object sender, EventArgs e)
{
    // Create the ElementHost control for hosting the
    // WPF UserControl.
    ElementHost host = new ElementHost();
    host.Dock = DockStyle.Fill;

    // Create the WPF UserControl.
    HostingWpfUserControlInWf.UserControl1 uc =
        new HostingWpfUserControlInWf.UserControl1();

    // Assign the WPF UserControl to the ElementHost control's
    // Child property.
    host.Child = uc;

    // Add the ElementHost control to the form's
    // collection of child controls.
    this.Controls.Add(host);
}

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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Surprisingly Expensive
This propery seems unnecesarily slow to set. I think it is reallicating the backing store for the host whenever you set the Child.

You can just place a System.Windows.Controls.Border in the Child, and then change the Child of that. That turns out to be much faster.
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