獲得代碼元素後面我有如下定義的DataTemplate一個FlipView控制:如何從的DataTemplate
<FlipView x:Name="FlipView5Horizontal" Width="480" Height="270" BorderBrush="Black" BorderThickness="1" Style="{StaticResource FlipViewStyle1}">
<FlipView.ItemTemplate>
<DataTemplate>
<Grid>
<Image Width="480" Name="xxxImage" Height="270" Source="{Binding Image}" Stretch="UniformToFill"/>
<Border Name="xxxBorder" Background="#A5000000" Height="80" VerticalAlignment="Bottom">
<TextBlock Name="xxxTB" Text="{Binding Title}" FontFamily="Segoe UI" FontSize="26.667" Foreground="#CCFFFFFF" Padding="15,20"/>
</Border>
</Grid>
</DataTemplate>
</FlipView.ItemTemplate>
</FlipView>
在後面我的代碼,我需要有機會獲得名爲「xxxTB」 TextBlock的。這裏是我的代碼來做到這一點:
public IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
{
if (depObj != null)
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
{
DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
if (child != null && child is T)
{
yield return (T)child;
}
foreach (T childOfChild in FindVisualChildren<T>(child))
{
yield return childOfChild;
}
}
}
}
public void TestMethod()
{
foreach (var item in FindVisualChildren<TextBlock>(this))
{
if (timeLine.Name == "xxxTB")
{ }
}
}
但是,當它發現在的VisualTree的FlipView,它返回:for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
因爲VisualTreeHelper.GetChildrenCount(depObj)
不返回任何東西。
有什麼想法?
使用'GetTemplateChild(「xxxTB」)'。 –
我試過了,但是它返回null。 – tavier
看到這不會幫助:http://wpftutorial.net/DataTemplates.html – Bayeni