[英]How to get the full collection of listbox, when i tap on the button, which is in listbox's item?
我有一个收藏夹,显示在列表框中。 这是主要listBox的listBoxItem。 每个列表框的项(不是主要的)都有一个文本框和按钮。 因此,当我点击列表框中的任何按钮时,我需要获取所有收藏。 这是Windows pnone 7应用程序。 我想获取listbBox中的项目列表。 我知道如何获得一个不是集合的项目(只是主要listBox的项目)
private void Audio_Button_Click(object sender, RoutedEventArgs e)
{
string uri = null;
TextBox tb = null;
var grid = (Grid)((Button)sender).Parent;
foreach (var child in grid.Children)
{
if (child is TextBox && (string)((TextBox)child).Tag == "URL")
{
tb = (TextBox)child;
}
}
uri = tb.Text;
但我不知道如何获得所有物品。 问题在于“发件人”具有类型按钮,而不是listBoxItem。 而且无论如何,如果类型为listBoxItem-我不确定我是否知道如何制作项目列表(
或者,也许我可以使用其他控件,而无需滚动? 收集不是很大。 但是我想我会有同样的问题(
更新:
<local:NewsTemplateSelector.Audio>
<DataTemplate>
<Grid Name="AudioGrid" MaxHeight="2000">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="75"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="75"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="28"/>
</Grid.RowDefinitions>
<Image Source="{Binding SourceImage}" Width="75"/>
<TextBlock Text="{Binding SourceName}" Foreground="Black" FontSize="25" Grid.Column="1" TextWrapping="Wrap" />
<TextBlock Text="{Binding Texts}" Foreground="Black" FontSize="25" Grid.Column="1" Grid.Row="1" TextWrapping="Wrap" VerticalAlignment="Top" Height="auto" />
<Image Source="{Binding Photo[0].Big}" Margin="10" Grid.Column="1" Grid.Row="2"/>
<TextBlock Text="{Binding Audio[0].Title}" Foreground="Black" FontSize="25" Margin="96,10,10,10" Grid.Column="1" Grid.Row="3" />
<Button Background="Black" Content="Play" Grid.Column="1" HorizontalAlignment="Left" Margin="10,7,0,10" Grid.Row="3" d:LayoutOverrides="Height" Width="74" Tap="Audio_Button_Click" />
<Image Source="images\like.jpg" Grid.Column="1" HorizontalAlignment="Right" Grid.Row="4" Width="30" Margin="0,1.5,34,-1.5" d:LayoutOverrides="VerticalMargin"/>
<TextBlock Text="{Binding Likes}" Grid.Column="1" HorizontalAlignment="Right" Grid.Row="4" Foreground="Black" TextWrapping="Wrap" Width="30" Margin="0,0.5,0,-0.5"/>
<Line X1="0" Y1="27" X2="420" Y2="27" Margin="0,-28,0,0" Stroke="Gray" StrokeThickness="1" Grid.Column="1" />
<Line X1="0" Y1="27" X2="80" Y2="27" Margin="0,-28,0,0" Stroke="Gray" StrokeThickness="1" />
<TextBox Text="{Binding Audio[0].Url}" Tag="URL" Visibility="Collapsed" />
</Grid>
</DataTemplate>
</local:NewsTemplateSelector.Audio>
和
<local:NewsTemplateSelector.Audios>
<DataTemplate>
<Grid Name="AudiosGrid" MaxHeight="2000">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="75"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="75"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="28"/>
</Grid.RowDefinitions>
<Image Source="{Binding SourceImage}" Width="75"/>
<TextBlock Text="{Binding SourceName}" Foreground="Black" FontSize="25" Grid.Column="1" TextWrapping="Wrap" />
<TextBlock Text="{Binding Texts}" Foreground="Black" FontSize="25" Grid.Column="1" Grid.Row="1" TextWrapping="Wrap" VerticalAlignment="Top" Height="auto" />
<Image Source="{Binding Photo[0].Big}" Margin="10" Grid.Column="1" Grid.Row="2"/>
<ListBox Name="audiosListbox" ItemsSource="{Binding Audio}" MaxHeight="500" Margin="10" Grid.Column="1" Grid.Row="3" >
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Title}" Grid.Column="1" Foreground="Black" FontSize="25" />
<Button Content="Play" Background="Black" Tap="Audios_Button_Click" />
<TextBox Text="{Binding Audio.Url}" Tag="URL" Visibility="Collapsed" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Image Source="images\like.jpg" Grid.Column="1" HorizontalAlignment="Right" Grid.Row="4" Width="30" Margin="0,1.5,34,-1.5" d:LayoutOverrides="VerticalMargin"/>
<TextBlock Text="{Binding Likes}" Grid.Column="1" HorizontalAlignment="Right" Grid.Row="4" Foreground="Black" TextWrapping="Wrap" Width="30" Margin="0,0.5,0,-0.5"/>
<Line X1="0" Y1="27" X2="420" Y2="27" Margin="0,-28,0,0" Stroke="Gray" StrokeThickness="1" Grid.Column="1" />
<Line X1="0" Y1="27" X2="80" Y2="27" Margin="0,-28,0,0" Stroke="Gray" StrokeThickness="1" />
</Grid>
</DataTemplate>
</local:NewsTemplateSelector.Audios>
我有
您可以使用Linq To Visual Tree ( 下载代码 ,仅一个文件)来获取包含所有项目的列表框。 点击处理程序上的这段代码应该适用。
var parentLb = ((Button)sender).Ancestors().FirstOrDefault(x => x is Listbox) as Listbox;
if(parentLb != null)
{
// Cast the ItemsSource property to the list type you're using...
var list = parentLb.ItemsSource
// And do whatever you want with that list.
}
您当然应该将list
转换为其原始类型。
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