[英]How to prevent ListView from stealing scroll activity on Datagrid parent?
我在DataGridTemplateColumn中有一個ListView,如果鼠標光標位於ListView中的某個項目上,並且用戶嘗試滾動DataGrid,則DataGrid不會滾動。
我嘗試了以下方法,但仍然會發生:
<ListView ScrollViewer.CanContentScroll="False" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Disabled" ...
編輯:下面提供使用此示例的示例,我使用ListView使項目在溢出時自動換行。
<DataGridTemplateColumn Header="Name" Width="120" ScrollViewer.IsDeferredScrollingEnabled="True">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<ListView ScrollViewer.CanContentScroll="False" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Disabled" VerticalAlignment="Center" ItemsSource="{Binding DataList}">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Width="{Binding (FrameworkElement.ActualWidth), RelativeSource={RelativeSource AncestorType=ScrollContentPresenter}}" ItemWidth="{Binding (ListView.View).ItemWidth, RelativeSource={RelativeSource AncestorType=ListView}}" ItemHeight="{Binding (ListView.View).ItemHeight, RelativeSource={RelativeSource AncestorType=ListView}}"/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock>
<Hyperlink TextDecorations="{x:Null}" NavigateUri="{Binding Path=.}" RequestNavigate="Name_RequestNavigate">
<TextBlock Padding="1" Text="{Binding Path=., Converter={StaticResource NameToLocale}}"/>
</Hyperlink>
</TextBlock>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
嘗試這種方式:
A)更改列表視圖ControlTemplate
以從其中刪除ScrollViewer
:
<ListView>
<ListView.Template>
<ControlTemplate>
<ItemsPresenter/>
</ControlTemplate>
</ListView.Template>
...
</ListView>
B)另一種方法是基於此答案為父元素創建行為
// Used on sub-controls of an expander to bubble the mouse wheel scroll event up
public sealed class BubbleScrollEvent : Behavior<UIElement>
{
protected override void OnAttached()
{
base.OnAttached();
AssociatedObject.PreviewMouseWheel += AssociatedObject_PreviewMouseWheel;
}
protected override void OnDetaching()
{
AssociatedObject.PreviewMouseWheel -= AssociatedObject_PreviewMouseWheel;
base.OnDetaching();
}
void AssociatedObject_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
e.Handled = true;
var e2 = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
e2.RoutedEvent = UIElement.MouseWheelEvent;
AssociatedObject.RaiseEvent(e2);
}
}
<SomePanel>
<i:Interaction.Behaviors>
<viewsCommon:BubbleScrollEvent />
</i:Interaction.Behaviors>
</SomePanel>
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