在为Windows Phone 7编程时,我创建了一个列表框并使用包含文本块和文本框的DataTemplate。默认情况下隐藏文本框。
XAML:
<ListBox>
<ListBox.ItemTemplate>
<DataTemplate>
<Canvas Width="460" Height="60" Background="{StaticResource PhoneAccentBrush}">
<TextBlock Text="{Binding data}" FontSize="30" Margin="10,10,10,0"/>
<TextBox Height="60" Width="460" Visibility="Collapsed"/>
</Canvas>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
我想要完成的效果是:在显示文本框时点按文本块以隐藏文本块。
背后的代码:
private void TextBlock_Tap(object sender, GestureEventArgs e)
{
TextBlock.Visibilty = Visibility.Collapsed;
TextBox.Visibilty = Visibility.Visible;
}
但是,显然选择器不正确。我尝试为文本框和文本块添加名称,但名称似乎在数据模板中不起作用。是否有人可以告诉我如何在数据模板中选择文本块和文本框?非常感谢!!!
答案 0 :(得分:1)
试试这个:
<ListBox Name="lst" >
<ListBox.ItemTemplate>
<DataTemplate>
<Canvas Width="460" Height="60" Background="{StaticResource PhoneAccentBrush}" Tap="Canvas_Tap">
<TextBlock Text="{Binding}" FontSize="30" Margin="10,10,10,10"/>
<TextBox Height="60" Width="460" Visibility="Collapsed" Text="text"/>
</Canvas>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
在代码背后:
private void Canvas_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
var m = (sender as Canvas).Children;
foreach (UIElement x in m)
{
if ((x as TextBlock) != null)
(x as TextBlock).Visibility = Visibility.Collapsed;
if ((x as TextBox) != null)
(x as TextBox).Visibility = Visibility.Visible;
}
}
答案 1 :(得分:0)
在模板上设置名称确实有效,但您无法直接访问它!
相反,请尝试这样:
<ListBox x:Name="MyListBox">
<ListBox.ItemTemplate>
<DataTemplate>
<Canvas Width="460" Height="60" Background="{StaticResource PhoneAccentBrush}">
<TextBlock x:Name="MyTextBlock" Text="{Binding data}" FontSize="30" Margin="10,10,10,0" Tap="MyTextBlock_Tap" />
<TextBox x:Name="MyTextBox" Height="60" Width="460" Visibility="Collapsed"/>
</Canvas>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
代码:
private void MyTextBlock_Tap(object sender, GestureEventArgs e)
{
var elem = (FrameworkElement)sender;
var myTextBlock = (TextBlock)elem.FindName("MyTextBlock");
var myTextBox = (TextBox)elem.FindName("MyTextBox");
myTextBlock.Visibility = Visibility.Collapsed;
myTextBox.Visibility = Visibility.Visible;
}