Question

我正在尝试制作体育新闻应用。我在列表框中创建了一个按钮，显示所有新闻，描述等。没有。按钮取决于xml文件。当我点击按钮时，我想在下一页上显示该按钮的新闻和说明。我怎么做？感谢

<ListBox x:Name="lstShow" FontFamily="Arial Black" VerticalAlignment="Center"
   Margin="-6,0,0,-26" Height="610" RenderTransformOrigin="0.5,0.5"
   Background="{x:Null}" Opacity="0.8">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <Grid>
                <Button Width="450" Height="Auto" Background="Black" 
                  BorderBrush="Transparent" FontWeight="Bold" FontSize="23" 
                  HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,0,0,5" 
                  Opacity="0.95" Click="news_click" Foreground="White">
                    <StackPanel>
                        <Image Source="{Binding Imageurl}" Width="200" Height="Auto"
                          HorizontalAlignment="Center" VerticalAlignment="Center" />
                        <TextBlock   TextWrapping="Wrap" FontFamily="Segoe WP Black" 
                          Foreground="White" FontSize="18" HorizontalAlignment="Stretch" 
                          VerticalAlignment="Stretch" TextAlignment="Left" Width="350" 
                          Height="150">
                        <Run FontSize="23" Text="{Binding News}" />
                        <LineBreak/>
                        <Run Text="{Binding Desc}" FontWeight="Normal" FontSize="16" 
                          FontFamily="Segoe WP SemiLight"/>
                        <LineBreak/>
                        <Run Text="{Binding Newsurl}" FontWeight="Normal" FontSize="16" 
                          FontFamily="Segoe WP SemiLight"/>

                     </TextBlock>
                  </StackPanel>
               </Button>
            </Grid>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

代码背后：

myData = XDocument.Parse(e.Result, LoadOptions.None);
// var data = myData.Descendants("headlines").FirstOrDefault();
var data1 = from query in myData.Descendants("headlinesItem")
    where query.Element("images").Descendants("imagesItem").Any()
    select new UpdataNews
    {
        News = (string)query.Element("headline").Value,
        Desc = (string)query.Element("description"),
        Newsurl = (string)query.Element("links").Element("mobile").Element("href"),
        Imageurl = (string)query.Element("images").Element("imagesItem").Element("url"),
    };
lstShow.ItemsSource = data1;

Answer 1

有很多方法。

如果您使用MVVM，最好的方法是在按钮上设置Command并将CommandParameter设置为绑定。

＆lt; Button Command = {Binding ClickCommand}“CommandParameter =”{Binding}“......
如果你不使用MVVM，你可以这样做：

＆lt; Button Tag =“{Binding}”Click =“My_Click_Event”...

然后在后面的代码中执行：

public void My_Click_Event(object sender, EventArgs args)
{
  var o = ((FrameworkElement)sender).Tag;
}

如何从列表框中的按钮中提取值？

1 个答案: