silverlight – 获取ContentControl Control的模板儿童？

我们正在开发一个使用通用自定义ContentControl的Silverlight应用程序.此ContentControl具有Generic.xaml中指定的控件模板.

继承的ContentControl的模板……

<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>

继承的ComboBox的模板……

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

…

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

实例化时,ContentControl的内容设置为(通用)控件,可以是TextBox,Dropdown,Label或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
    }
}

正如你在我上一篇评论中看到的……

//从ExtComboBox控件模板中查找FocusVisualElement
// Rectangle rec = cmbTest.FindName(“FocusVisualElement”)为Rectangle;
// cmbTest返回null

如何从ContentControl内的OnApplyTemplate内部获取FocusVisualElement？

希望这是有道理的.

解决方法

解决方案……

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