Get ContentControl Control's Template Children?

问题

We're working on a Silverlight application that uses a generic custom ContentControl. This ContentControl has a Control Template specified in a Generic.xaml.

The inherited ContentControl's Template...

<Style TargetType="local:ExtContentControl">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="local:ExtContentControl">
                <Border x:Name="content" Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        Child="{TemplateBinding Content}">
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

The inherited ComboBox's Template...

<controltemplate targettype="local:ExtComboBox"></controltemplate>

...

<Rectangle x:Name="FocusVisualElement" IsHitTestVisible="false" Margin="1" Opacity="0" RadiusY="2" RadiusX="2" Stroke="#FF6DBDD1" StrokeThickness="1"/>

When it is instantiated the ContentControl's content is set to a (generic) control which can be a Textbox, Dropdown, Label or Datepicker.

public class ExtContentControl : ContentControl
{
    public ExtContentControl()
    {
        this.DefaultStyleKey = typeof(ExtContentControl);

        RenderControl();
    }

    private void RenderControl()
    {
        ExtComboBox extComboBox = new ExtComboBox();
        this.Content = extComboBox;
    }

    public override void OnApplyTemplate()
    {
        base.OnApplyTemplate();

        Border bor = GetTemplateChild("content") as Border;

        ExtComboBox cmbTest = bor.Child as ExtComboBox;

        //Find FocusVisualElement from ExtComboBox Control Template
        //Rectangle rec = cmbTest.FindName("FocusVisualElement") as Rectangle;
        //cmbTest returns null
    }
}

As you can see in my last comment...

//Find FocusVisualElement from ExtComboBox Control Template //Rectangle rec = cmbTest.FindName("FocusVisualElement") as Rectangle; //cmbTest returns null

How can I get hold of FocusVisualElement from inside OnApplyTemplate inside the ContentControl?

Hope this makes sense.

回答1:

Solution for this...

http://www.codeproject.com/Questions/192431/Hover-Foreground-Colour-with-dynamic-binding-Conte.aspx

来源：https://stackoverflow.com/questions/5911344/get-contentcontrol-controls-template-children

标签

silverlight

templates

contentcontrol