我创建了一个应用程序,可以使用图像注册一些用户。为了列出它们,我在 a 中显示了这些图像ListBox
,然后您可以单击每个用户图像来选择它,如图所示。
这ListBox
是使用我自己的Template
:
<Style TargetType="ListBox" x:Key="TiledListBox">
<Setter Property="Margin" Value="0,0,10,0"></Setter>
<Setter Property="Padding" Value="1"/>
<Setter Property="Background" Value="White" />
<Setter Property="HorizontalContentAlignment" Value="Left" />
<Setter Property="VerticalContentAlignment" Value="Top" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<WrapPanel Width="{Binding Path=ActualWidth, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type Grid}}}" />
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<StackPanel Orientation="Vertical" Width="80">
<Image Source="{Binding Path=Picture}" Width="80" Height="80"></Image>
</StackPanel>
</DataTemplate>
</Setter.Value>
</Setter>
</Style>
ListBox
在XAML
:_
<ListBox Name="ListBoxUsers" ItemsSource="{Binding Path=ListObservableUsers, ElementName=SelectUser}" Style="{DynamicResource TiledListBox}"
ScrollViewer.HorizontalScrollBarVisibility="Hidden" MouseDoubleClick="ListBoxUsers_MouseDoubleClick" />
后面的代码仅ListBox
使用ObservableCollection
.
问题来了。当我尝试单击与第一个不同的用户时,会选择多个用户,如下图所示:
关于为什么会发生这种情况的任何想法?
我不得不说我在另一个中使用相同的代码Window
并且它工作得很好,但我看不出它们之间有什么区别......
编辑:您可以使用后面的代码来使示例工作。
public partial class MainWindow
{
public ObservableCollection<DtoObject> ListObservableUsers { get; set; }
public MainWindow()
{
ListObservableUsers = new ObservableCollection<DtoObject>();
InitializeComponent();
Image image = new Image {Source = Extensions.LoadBitmap(new Bitmap(Properties.Resources.vaca))};
for (int i = 0; i < 4; i++)
{
DtoObject dtoObject = new DtoObject {Picture = image};
ListObservableUsers.Add(dtoObject);
}
}
}
public static class Extensions
{
public static BitmapSource LoadBitmap(Bitmap source)
{
IntPtr ip = source.GetHbitmap();
BitmapSource bs = null;
bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(ip,
IntPtr.Zero, Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
return bs;
}
}
public class DtoObject
{
public Image Picture { get; set; }
}
private void ListBoxUsers_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
AcceptUser();
}
private void AcceptUser()
{
if (ListBoxUsers.SelectedIndex < 0) return;
selectedUser = (DtoObject)ListBoxUsers.SelectedItem;
EventHandler handler = UserSelected;
if (handler != null)
handler(this, new EventArgs());
DialogResult = true;
Close();
}
事件发生在 another Window
,所以我认为问题可能不在这里。