我有一个贴纸列表，当我 select 此列表中的一个或多个贴纸时，我想要在 uwp 应用程序中的 canvas 上显示贴纸

Question

<ListView x:Name="Stickers1" Visibility="Collapsed" 
    SelectionChanged="Stickers1_SelectionChanged" 
    ScrollViewer.VerticalScrollMode="Enabled" 
    ScrollViewer.VerticalScrollBarVisibility="Hidden" BorderThickness="50" 
    FontSize="36" Margin="0" ItemTemplate="{StaticResource 
    listStickersDataTemplate}">
    <ListView.ItemsPanel>
        <ItemsPanelTemplate>
            <WrapGrid Orientation="Horizontal" 
                HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
        </ItemsPanelTemplate>
    </ListView.ItemsPanel>
</ListView>
 <DataTemplate x:Key="listStickersDataTemplate">
     <Grid>
         <Image Source="{Binding Imageurl}" Stretch="Fill" Height="200" Width="200"/>
    </Grid>
 </DataTemplate>`

Answer 1

查看您的 Stickers1_SelectionChanged 活动，您似乎没有在 Canvas

中设置 img 的 Source

像下面这样的东西应该可以解决它

private void Stickers1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    var selecteditem = e.AddedItems[0] as StickersImageListModel;
    Stickers1.Visibility = Visibility.Collapsed;
    BitmapImage image = new BitmapImage(new System.Uri("ms-appx://" + selecteditem.ImageUrl, UriKind.Absolute));
    img.Source = image;
    my_canvas.Visibility = Visibility.Visible;   
}

我有一个贴纸列表，当我 select 此列表中的一个或多个贴纸时，我想要在 uwp 应用程序中的 canvas 上显示贴纸

I have a list of stickers and i want when I select one or more stickers from this list, stickers are display on my canvas in uwp application

uwp-xaml