DataGrid's CellEditingTemplate and focus in ed

问题:

I am having an issue with WPFToolkit DataGrid when a column is customized supplying both CellTemplate and CellEditingTemplate. If you take a look below, you will see my editing template has a single CheckBox. All is fine in a functional sense but when F2 is hit to edit the cell, one must also hit TAB in order for the CheckBox to receive focus. Ideally, one would hit F2 and SPACE to toggle the value. Currently, one must hit F2, TAB, SPACE. I have tried setting TabIndex to no avail. I am running out of ideas.

<WPFToolkit:DataGridTemplateColumn Header="Turn"
                                   MinWidth="60">
    <WPFToolkit:DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <Image Height="16">
                <Image.Style>
                    <Style TargetType="{x:Type Image}">
                        <Style.Triggers>
                            <DataTrigger Binding="{Binding CanTurn}" Value="True">
                                <Setter Property="Source" Value="/Images/16/Tick.png" />
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </Image.Style>
            </Image>
        </DataTemplate>
    </WPFToolkit:DataGridTemplateColumn.CellTemplate>

    <WPFToolkit:DataGridTemplateColumn.CellEditingTemplate>
        <DataTemplate>
            <CheckBox IsChecked="{Binding Path=CanTurn}" HorizontalAlignment="Center" HorizontalContentAlignment="Center" />
        </DataTemplate>
    </WPFToolkit:DataGridTemplateColumn.CellEditingTemplate>
</WPFToolkit:DataGridTemplateColumn>

回答1:

Try this

<DataGridTemplateColumn.CellEditingTemplate>
    <DataTemplate>
        <CheckBox Name="checkbox" IsChecked="{Binding Path=CanTurn}" HorizontalAlignment="Center" HorizontalContentAlignment="Center" />
        <DataTemplate.Triggers>
            <Trigger SourceName="checkbox" Property="IsVisible" Value="True">
                <Setter TargetName="checkbox" Property="FocusManager.FocusedElement" Value="{Binding ElementName=checkbox}" />
            </Trigger>
        </DataTemplate.Triggers>
    </DataTemplate>
</DataGridTemplateColumn.CellEditingTemplate>

回答2:

Or this...

<DataGridTemplateColumn Header="Long" IsReadOnly="False" Width="100">
  <DataGridTemplateColumn.CellEditingTemplate>
    <DataTemplate>
      <CheckBox FocusManager.FocusedElement="{Binding RelativeSource={RelativeSource Self}}" IsChecked="{Binding Path=CanTurn}" HorizontalAlignment="Center" HorizontalContentAlignment="Center" />
    </DataTemplate>
  </DataGridTemplateColumn.CellEditingTemplate>
</DataGridTemplateColumn>

回答3:

if you want to set the focus on edit and select the text given by a Binding try this.

<DataGridTemplateColumn.CellEditingTemplate>
    <DataTemplate>
        <TextBox Text="{Binding Parameter0, Mode=TwoWay}" Loaded="TbLoaded" />
    </DataTemplate>
</DataGridTemplateColumn.CellEditingTemplate>

code behind:

private void TbLoaded(object sender, EventArgs e)
{
    TextBox tb = sender as TextBox;
    if (tb == null) return;

    tb.SelectAll();
    FocusManager.SetFocusedElement(this, tb);
}