Bor*_*ort 7 c# wpf xaml listview
在我的应用程序中,我有一个listview,其项目容器样式绑定到我的视图模型上的IsSelected属性.
我还在listview上设置了一个inputbinding来处理以编程方式选择列表中的所有项目,因为默认情况下由于虚拟化堆栈面板不起作用.这很好用.
当用户按下CTRL + A后单击单个列表项时出现问题.用户应该期望发生的是单击的单个新项目成为唯一选择的项目.实际发生的是listview不会更新看不到的项目的IsSelected属性,只有当前可见的项目才会被取消选中.
我该如何正确处理这种行为?
<ListView
Name="sortList"
Grid.Row="1"
ItemsSource="{Binding RelativeSource={RelativeSource
FindAncestor, AncestorType={x:Type UserControl}},
Path=ItemsSource, Mode=TwoWay}">
<ListView.InputBindings>
<KeyBinding Gesture="CTRL+A" Command="{Binding SelectAllCommand}" />
</ListView.InputBindings>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="Padding" Value="3" />
<Setter
Property="IsSelected"
Value="{Binding Path=IsSelected, Mode=TwoWay}" />
</Style>
</ListView.ItemContainerStyle>
</ListView>
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这是select all命令.
private RelayCommand _selectAllCommand;
public System.Windows.Input.ICommand SelectAllCommand
{
get
{
if (_selectAllCommand == null)
_selectAllCommand = new RelayCommand(param => this.SelectAll());
return _selectAllCommand;
}
}
private void SelectAll()
{
foreach (object o in this.Objects)
if (!this.SelectedItems.Contains(order))
order.IsSelected = true;
}
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