WPF 数据网格“shift + tab”（反向制表符）在启用“单击编辑”后不再工作？

Question

我有一个可编辑的数据网格，我想在数据网格单元格上实现 "single-click edit"，这意味着您只需单击一次即可使数据网格单元格可编辑。

    <DataGrid RowHeaderWidth="0" BorderThickness="1,1,1,0" GridLinesVisibility="All"
              AutoGenerateColumns="False" CanUserReorderColumns="False" CanUserDeleteRows="False"
              EnableColumnVirtualization="False" EnableRowVirtualization="False" SelectionMode="Single"
              ItemsSource="{Binding Path=Queries}" 
              SelectedIndex="{Binding Path=SelectedQueryIndex}"
              DataGridCell.GotFocus="DataGridCell_GotFocus">

我添加了以下代码，它运行良好：

private void DataGridCell_GotFocus(object sender, RoutedEventArgs e)
{
    DataGridCell cell = e.OriginalSource as DataGridCell;
    if (cell != null)
    {
        // clear existing selection
        ((DataGrid)sender).SelectedIndex = -1;

        // set cell to edit mode
        if (cell.Column.DisplayIndex != 0)
        {
            ((DataGrid)sender).BeginEdit(e);
        }

        // set focus on inner control
        Control control = FindFirstChildControl(cell);
        if (control != null)
        {
            control.Focus();
        }
    }
}

private Control FindFirstChildControl(DependencyObject obj)
{
    Control result = null;
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
    {
        DependencyObject childObj = VisualTreeHelper.GetChild(obj, i);
        if (childObj != null)
        {
            if (childObj is Control)
            {
                result = childObj as Control;
                break;
            }
            else
            {
                result = FindFirstChildControl(childObj);
                if (result != null)
                {
                    break;
                }
            }
        }
    }
    return result;
}

但是，添加这段代码会使 "shift + tab"（反向制表符）键盘热键不再适用于数据网格。

我如何在拥有 "single click edit" 功能的情况下修复它？

谢谢！

Answer 1

解决此问题的一种方法（可能不是最好的方法）是像这样手动处理 "Shift is down"：

    private void DataGridCell_GotFocus(object sender, RoutedEventArgs e)
    {
        // add this line
        if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift)) return;

        ....

    }

    //and this event handler
    private void DataGrid_PreviewKeyDown(object sender, KeyEventArgs e)
    {
        if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
            ((DataGrid)sender).CommitEdit();
    }

WPF 数据网格“shift + tab”（反向制表符）在启用“单击编辑”后不再工作？

WPF datagrid “shift + tab” (reverse tabbing) no longer working after enabled “single-click edit”?

c#

wpf

datagrid