我有一个 DataGrid,其中有一个在 RowDetailsTemplate 中定义的按钮。问题是,当单击按钮时,第一次单击被 DataGrid 消耗以选择行,因此您需要单击按钮两次。
我已经尝试过此处提供的解决方法:wpf RowDetailsTemplate focus :
XAML:
<DataGrid ItemsSource="{Binding SomeCollection}">
<DataGrid.Resources>
<Style TargetType="DataGridRow">
<EventSetter Event="PreviewMouseLeftButtonDown" Handler="SelectRowDetails"/>
<Setter Property="DetailsVisibility" Value="{Binding HasCanadet, Converter={StaticResource BoolToVis}}"/>Mode=OneWay}"/>
</Style>
</DataGrid.Resources>
...
<DataGrid.RowDetailsTemplate>
<DataTemplate>
...
<Button Command="{Binding SomeCommand}" ... \>
...
</DataTemplate>
</DataGrid.RowDetailsTemplate>
...
<DataGrid>
背后代码:
private void SelectRowDetails(object sender, MouseButtonEventArgs e)
{
var row = sender as DataGridRow;
if (row == null)
{
return;
}
row.Focusable = true;
row.Focus();
var focusDirection = FocusNavigationDirection.Next;
var request = new TraversalRequest(focusDirection);
var elementWithFocus = Keyboard.FocusedElement as UIElement;
if (elementWithFocus != null)
{
elementWithFocus.MoveFocus(request);
}
}
这效果很好,但我现在需要检测 DataGrid 行上的双击事件。我通过将 InputBindings 添加到 DataGrid 并将 SelectedItem 作为命令参数传递来完成此操作:
...
<DataGrid.InputBindings>
<MouseBinding MouseAction="LeftDoubleClick" Command="{Binding AnotherCommand}" CommandParameter="{Binding RelativeSource={RelativeSource Self}, Path=SelectedItem}" />
</DataGrid.InputBindings>
...
问题在于,仅在 RowDetails 上检测到双击(这很好),但在双击行本身时则不会检测到双击(这不是)。
有什么想法吗? 谢谢。
最佳答案
检查事件源的类型是否为DataGridDetailsPresenter
private void SelectRowDetails(object sender, MouseButtonEventArgs e)
{
if(e.Source is DataGridDetailsPresenter) // Like this
{
var row = sender as DataGridRow;
if (row == null)
{
return;
}
row.Focusable = true;
row.Focus();
var elementWithFocus = Keyboard.FocusedElement as UIElement;
if (elementWithFocus != null)
{
elementWithFocus.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
}
}
}
关于c# - DataGrid RowDetails 中的按钮需要两次单击,解决方法会中断双击,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35182396/