Walkthrough: Hosting a Windows Presentation Foundation Composite Control in Windows Forms

Articolo
11/03/2006

This walkthrough demonstrates how you can create a WPF composite control and host it in Windows Forms controls and forms by using the ElementHost control.

In this walkthrough, you will implement a WPF UserControl that contains two child controls. The UserControl displays a three-dimensional (3-D) cone. Rendering 3-D objects is much easier with the WPF than with Windows Forms. Therefore, it makes sense to host a WPF UserControl class to create 3-D graphics in Windows Forms.

Tasks illustrated in this walkthrough include:

Creating the WPF UserControl.
Creating the Windows Forms host project.
Hosting the WPF UserControl.

For a complete code listing of the tasks illustrated in this walkthrough, see Hosting a Windows Presentation Foundation Composite Control in Windows Forms Sample.

Note:
The dialog boxes and menu commands you see might differ from those described in Help, depending on your active settings or edition. To change your settings, choose Import and Export Settings on the Tools menu.

Prerequisites

To complete this walkthrough you will need:

Development Tools for .NET Framework 3.0, which enable you to create a WPF application project. For information on installing these tools, see Installation Instructions for the Windows SDK.

Creating the UserControl

To create the UserControl

Create a User Control (WPF) project named HostingWpfUserControlInWf.
Open UserControl1.xaml in the XAML Code Editor.

Replace the generated code with the following code.

This code defines a System.Windows.Controls.UserControl that contains two child controls. The first child control is a System.Windows.Controls.Label control; the second is a Viewport3D control that displays a 3-D cone.

<UserControl x:Class="HostingWpfUserControlInWf.UserControl1"
    xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
    >

    <Grid>

      <!-- Place a Label control at the top of the view. -->
      <Label 
                HorizontalAlignment="Center" 
                TextBlock.TextAlignment="Center" 
                FontSize="20" 
                Foreground="Red" 
                Content="Model: Cone"/>

      <!-- Viewport3D is the rendering surface. -->
      <Viewport3D Name="myViewport" >

        <!-- Add a camera. -->
        <Viewport3D.Camera>
          <PerspectiveCamera 
                        FarPlaneDistance="20" 
                        LookDirection="0,0,1" 
                        UpDirection="0,1,0" 
                        NearPlaneDistance="1" 
                        Position="0,0,-3" 
                        FieldOfView="45" />
        </Viewport3D.Camera>

        <!-- Add models. -->
        <Viewport3D.Children>

          <ModelVisual3D>
            <ModelVisual3D.Content>

              <Model3DGroup >
                <Model3DGroup.Children>

                  <!-- Lights, MeshGeometry3D and DiffuseMaterial objects are added to the ModelVisual3D. -->
                  <DirectionalLight Color="#FFFFFFFF" Direction="3,-4,5" />

                  <!-- Define a red cone. -->
                  <GeometryModel3D>

                    <GeometryModel3D.Geometry>
                      <MeshGeometry3D 
    Positions="0.293893 -0.5 0.404509  0.475528 -0.5 0.154509  0 0.5 0  0.475528 -0.5 0.154509  0 0.5 0  0 0.5 0  0.475528 -0.5 0.154509  0.475528 -0.5 -0.154509  0 0.5 0  0.475528 -0.5 -0.154509  0 0.5 0  0 0.5 0  0.475528 -0.5 -0.154509  0.293893 -0.5 -0.404509  0 0.5 0  0.293893 -0.5 -0.404509  0 0.5 0  0 0.5 0  0.293893 -0.5 -0.404509  0 -0.5 -0.5  0 0.5 0  0 -0.5 -0.5  0 0.5 0  0 0.5 0  0 -0.5 -0.5  -0.293893 -0.5 -0.404509  0 0.5 0  -0.293893 -0.5 -0.404509  0 0.5 0  0 0.5 0  -0.293893 -0.5 -0.404509  -0.475528 -0.5 -0.154509  0 0.5 0  -0.475528 -0.5 -0.154509  0 0.5 0  0 0.5 0  -0.475528 -0.5 -0.154509  -0.475528 -0.5 0.154509  0 0.5 0  -0.475528 -0.5 0.154509  0 0.5 0  0 0.5 0  -0.475528 -0.5 0.154509  -0.293892 -0.5 0.404509  0 0.5 0  -0.293892 -0.5 0.404509  0 0.5 0  0 0.5 0  -0.293892 -0.5 0.404509  0 -0.5 0.5  0 0.5 0  0 -0.5 0.5  0 0.5 0  0 0.5 0  0 -0.5 0.5  0.293893 -0.5 0.404509  0 0.5 0  0.293893 -0.5 0.404509  0 0.5 0  0 0.5 0  " 
    Normals="0.7236065,0.4472139,0.5257313  0.2763934,0.4472138,0.8506507  0.5308242,0.4294462,0.7306172  0.2763934,0.4472138,0.8506507  0,0.4294458,0.9030925  0.5308242,0.4294462,0.7306172  0.2763934,0.4472138,0.8506507  -0.2763934,0.4472138,0.8506507  0,0.4294458,0.9030925  -0.2763934,0.4472138,0.8506507  -0.5308242,0.4294462,0.7306172  0,0.4294458,0.9030925  -0.2763934,0.4472138,0.8506507  -0.7236065,0.4472139,0.5257313  -0.5308242,0.4294462,0.7306172  -0.7236065,0.4472139,0.5257313  -0.858892,0.429446,0.279071  -0.5308242,0.4294462,0.7306172  -0.7236065,0.4472139,0.5257313  -0.8944269,0.4472139,0  -0.858892,0.429446,0.279071  -0.8944269,0.4472139,0  -0.858892,0.429446,-0.279071  -0.858892,0.429446,0.279071  -0.8944269,0.4472139,0  -0.7236065,0.4472139,-0.5257313  -0.858892,0.429446,-0.279071  -0.7236065,0.4472139,-0.5257313  -0.5308242,0.4294462,-0.7306172  -0.858892,0.429446,-0.279071  -0.7236065,0.4472139,-0.5257313  -0.2763934,0.4472138,-0.8506507  -0.5308242,0.4294462,-0.7306172  -0.2763934,0.4472138,-0.8506507  0,0.4294458,-0.9030925  -0.5308242,0.4294462,-0.7306172  -0.2763934,0.4472138,-0.8506507  0.2763934,0.4472138,-0.8506507  0,0.4294458,-0.9030925  0.2763934,0.4472138,-0.8506507  0.5308249,0.4294459,-0.7306169  0,0.4294458,-0.9030925  0.2763934,0.4472138,-0.8506507  0.7236068,0.4472141,-0.5257306  0.5308249,0.4294459,-0.7306169  0.7236068,0.4472141,-0.5257306  0.8588922,0.4294461,-0.27907  0.5308249,0.4294459,-0.7306169  0.7236068,0.4472141,-0.5257306  0.8944269,0.4472139,0  0.8588922,0.4294461,-0.27907  0.8944269,0.4472139,0  0.858892,0.429446,0.279071  0.8588922,0.4294461,-0.27907  0.8944269,0.4472139,0  0.7236065,0.4472139,0.5257313  0.858892,0.429446,0.279071  0.7236065,0.4472139,0.5257313  0.5308242,0.4294462,0.7306172  0.858892,0.429446,0.279071  "                   TriangleIndices="0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 " />
                    </GeometryModel3D.Geometry>

                    <GeometryModel3D.Material>
                      <DiffuseMaterial>
                        <DiffuseMaterial.Brush>
                          <SolidColorBrush 
                            Color="Red" 
                            Opacity="1.0"/>
                        </DiffuseMaterial.Brush>
                      </DiffuseMaterial>
                    </GeometryModel3D.Material>

                  </GeometryModel3D>

                </Model3DGroup.Children>
              </Model3DGroup>

            </ModelVisual3D.Content>

          </ModelVisual3D>

        </Viewport3D.Children>

      </Viewport3D>
    </Grid>

</UserControl>

Creating the Windows Forms Host Project

To create the host project

Add a Windows application project named WpfUserControlHost to the solution.
In Solution Explorer, add a reference to the WindowsFormsIntegration assembly, which is named WindowsFormsIntegration.dll.

The default location for this file is %programfiles%\Reference Assemblies\Microsoft\Framework\v3.0\WindowsFormsIntegration.dll.
Add references to the following WPF assemblies:
- PresentationCore
- PresentationFramework
- WindowsBase
Add a reference to the HostingWpfUserControlInWf project.
In Solution Explorer, set the WpfUserControlHost project to be the startup project.

Hosting the Windows Presentation Foundation UserControl

To host the UserControl

In the Windows Forms Designer, open Form1.
In the Properties window, click Events, and then double-click the Load event to create an event handler.

The Code Editor opens to the newly generated Form1_Load event handler.

Replace the code in Form1.cs with the following code.

The Form1_Load event handler creates an instance of UserControl1 and adds it to the ElementHost control's collection of child controls. The ElementHost control is added to the form's collection of child controls.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using System.Windows.Forms.Integration;

namespace WpfUserControlHost
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        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);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Text
Imports System.Windows.Forms

Imports System.Windows.Forms.Integration

Public Class Form1
    Inherits Form

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ' Create the ElementHost control for hosting the
        ' WPF UserControl.
        Dim host As New ElementHost()
        host.Dock = DockStyle.Fill

        ' Create the WPF UserControl.
        Dim uc As 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.
        Me.Controls.Add(host)
    End Sub

End Class

Press F5 to build and run the application.

Condividi tramite

Walkthrough: Hosting a Windows Presentation Foundation Composite Control in Windows Forms

Prerequisites

Creating the UserControl

To create the UserControl

Creating the Windows Forms Host Project

To create the host project

Hosting the Windows Presentation Foundation UserControl

To host the UserControl

See Also

Reference

Concepts

Other Resources

Risorse aggiuntive