在XAML中ControlTemplate中定义的元素的访问属性 [英] Access properties of elements defined in ControlTemplate in xaml

问题描述

在我的XAML我已经把定义为10项：

in my xaml I have to put 10 items defined as:

<StackPanel Orientation="Horizontal" Grid.Row="0" Grid.Column="1">
  <TextBox Width="100"
           DataContext="{StaticResource dataProvider}"
           Text="{Binding XPath='BLOCK[@id=2]/ITEMS/ITEM[@id=1]/@value'}"/>
  <ComboBox Margin="5" 
            DataContext="{StaticResource dataProvider}"
            SelectedValuePath="Tag"
            SelectedValue="{Binding XPath='BLOCK[@id=2]/ITEMS/ITEM[@id=2]/@value'}">
    <ComboBoxItem Content="GROUP" Tag="6" />
    <ComboBoxItem Content="PRIVATE" Tag="5" />
  </ComboBox>            
  <TextBox Width="200"
           DataContext="{StaticResource dataProvider}"
           Text="{Binding XPath='BLOCK[@id=2]/ITEMS/ITEM[@id=4]/@value'}"/>
</StackPanel>

因此，而不是重复了很多次，我想用这样的控件模板>

So, instead of repeat it many times, I thought to use a ControlTemplate like this:

<DataTemplate.Resources>
  <ControlTemplate x:Key="AddressItemTemplate">
    <StackPanel Orientation="Horizontal">
      <TextBox Name="Address" Width="200"/>
      <ComboBox Name="Type">
        <ComboBoxItem Content="GROUP" Tag="6" />
        <ComboBoxItem Content="PRIVATE" Tag="5" />
      </ComboBox>
      <TextBox Name="Description" Width="200"/>
    </StackPanel>
  </ControlTemplate>      
</DataTemplate.Resources>

现在，当我使用它...

Now when I use it...

<Control Grid.Row="0" Grid.Column="1" Template="{StaticResource AddressItemTemplate}" />
<Control Grid.Row="1" Grid.Column="1" Template="{StaticResource AddressItemTemplate}" />
<Control Grid.Row="2" Grid.Column="1" Template="{StaticResource AddressItemTemplate}" />

..因为XPath的绑定属性是每个项目（ITEM [@Id]的变化总是不同的），我需要一种方法，当我创建了控制访问TextBox.Text，ComboBox.SelectedValuePath和ComboBox.SelectedValue属性。

.. since the XPath binding property is different for each item (the ITEM[@Id] changes always), I need a way to access the TextBox.Text, ComboBox.SelectedValuePath and ComboBox.SelectedValue property when I create the 'Control'.

有没有办法做到呢？

推荐答案

这是WPF中一个很普遍的问题。如果你命名你的控制 控件，你可以访问这些元素是这样的：

This is a very common question in WPF. You can access these elements if you named your Control control like this:

TextBox textBox = (TextBox)control.Template.FindName("Address", control);

ComboBox comboBox = (ComboBox)control.Template.FindName("Type", control);

我相信，你可以工作，其余为你自己。

I trust that you can work the rest out for yourself.

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