我创建了一个能够向某些用户注册图像的应用程序。要列出它们,我会在ListBox
内显示图像,然后您可以点击每个用户图像进行选择,如此图所示。
此ListBox
正在使用我自己的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
中的XAML
:
<ListBox Name="ListBoxUsers" ItemsSource="{Binding Path=ListObservableUsers, ElementName=SelectUser}" Style="{DynamicResource TiledListBox}"
ScrollViewer.HorizontalScrollBarVisibility="Hidden" MouseDoubleClick="ListBoxUsers_MouseDoubleClick" />
后面的代码仅使用ListBox
填充ObservableCollection
个项目。
问题来了。当我尝试点击与第一个用户不同的用户时,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?
我必须说我在另一个Window
中使用了相同的代码并且它完美无缺,但我看不出它们之间有任何区别......
编辑:您可以使用此代码来使示例正常工作。
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();
}
该事件进入另一个Window
,所以我认为问题可能不在这里。