问题描述

WPF/Silverlight Xaml 自定义ContentControl内容符号名的问题

在silverlight中，我自己写一个继承自ContentControl的内容控件GroupBox
其xaml如下

 <ContentControl x:Class=""EnvSafe.PTA.Shell.GroupBox""    xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""    xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""    xmlns:d=""http://schemas.microsoft.com/expression/blend/2008""    xmlns:mc=""http://schemas.openxmlformats.org/markup-compatibility/2006""    mc:Ignorable=""d"" HorizontalContentAlignment=""Stretch"" VerticalContentAlignment=""Stretch""    d:DesignHeight=""300"" d:DesignWidth=""400"">    <Grid x:Name=""LayoutRoot"" Width=""{Binding Path=Width}"" Height=""{Binding Path=Height}"" Margin=""{Binding Path=Margin}"" HorizontalAlignment=""Stretch"" VerticalAlignment=""Stretch"">        <TextBlock Text=""{Binding Path=Header}"" Margin=""10000"" Height=""auto"" HorizontalAlignment=""Left"" VerticalAlignment=""Top"" Width=""auto""/>        <Border Background=""{Binding Path=Background}"" Margin=""02.500"" CornerRadius=""5"" Padding=""5"" HorizontalAlignment=""Stretch"" VerticalAlignment=""Stretch"" BorderBrush=""Black"" BorderThickness=""1"">            <Grid>                <ContentPresenter x:Name=""Host"" HorizontalAlignment=""Stretch"" VerticalAlignment=""Stretch"" Content=""{Binding Path=Content}""/>            </Grid>        </Border>    </Grid></ContentControl>

在程序主窗体里使用如下(片段)：

 <Grid>    <self:GroupBox Header=""测试"">        <TextBlock x:Name=""TbTest"" />    </self:GroupBox></Grid>

现在在主窗体的前台代码中，访问TbTest时会发现TbTest为null，这是由于自定义内容控件的xaml和主窗体不处于同一name scope，那么如何修改可以使得在主窗体中根据x:Name发现自定义控件的内容？

注意：为什么Grid，StackPanel，Border这些原生控件能够支持内容获取？

解决方案

http://www.makaidong.com/%E5%8D%9A%E5%AE%A2%E5%9B%AD%E7%9F%A5%E8%AF%86%E5%BA%93/841.shtml