Question

我正在尝试在选择DataGridRow时更改DataGridHyperlinkColumn的颜色，但随后失去焦点。它似乎不尊重以下内容：

               <Style TargetType="Hyperlink">
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridRow}}, Path=IsSelected}" Value="True">
                            <Setter Property="Foreground" Value="White"/>
                        </DataTrigger>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Foreground" Value="Red"/>
                        </Trigger>
                        <DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridRow}}, Path=IsFocused}" Value="False">
                            <Setter Property="Foreground" Value="Blue"/>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>

Answer 1

问题是DataGridRow始终没有聚焦，它是聚焦的单元格：

<DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridCell}}, Path=IsFocused}" Value="False">

像这样绑定到父DataGridCell只有在你有单列的情况下才有效。如果您有多个列，单元格旁边的单元格包含HyperLink可能会被聚焦，那么您不能简单地使用RelativeSource绑定绑定到父单元格并检查其IsFocused属性。

然后你必须做一些更复杂的事情，例如处理DataGrid的GotFocus / LostFocus路由事件并将其Tag属性设置为true / false：

    private void dg_GotFocus(object sender, RoutedEventArgs e)
    {
        dg.Tag = true;
    }

    private void dg_LostFocus(object sender, RoutedEventArgs e)
    {
        dg.Tag = false;
    }

然后，您可以将DataTrigger绑定到DataGrid的Tag属性，而不是绑定到父DataGridCell的IsFocused属性：

<DataGrid x:Name="dg" GotFocus="dg_GotFocus" LostFocus="dg_LostFocus">
        <DataGrid.Columns>
            <DataGridTextColumn Binding="{Binding Text}" />
            <DataGridHyperlinkColumn Binding="{Binding Link}">
                <DataGridHyperlinkColumn.CellStyle>
                    <Style TargetType="DataGridCell">
                        <Style.Resources>
                            <local:Converter x:Key="converter" />
                            <Style TargetType="Hyperlink">
                                <Setter Property="Foreground" Value="Chocolate"></Setter>
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridRow}}, Path=IsSelected}" Value="True">
                                        <Setter Property="Foreground" Value="White"/>
                                    </DataTrigger>
                                    <Trigger Property="IsMouseOver" Value="True">
                                        <Setter Property="Foreground" Value="Red"/>
                                    </Trigger>
                                    <DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}, Path=Tag}" 
                                                 Value="False">
                                        <Setter Property="Foreground" Value="Blue"/>
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </Style.Resources>
                    </Style>
                </DataGridHyperlinkColumn.CellStyle>
            </DataGridHyperlinkColumn>
        </DataGrid.Columns>
    </DataGrid>

感谢mm8，按预期工作。这确实产生了一个意想不到的问题。现在没有遵守单元格填充。我会在哪里应用类似＆lt; Setter Property =“Padding”Value =“10,5,10,5”/＆gt;

在列的ElementStyle中：

<DataGridHyperlinkColumn Binding="{Binding Link}">
                <DataGridHyperlinkColumn.ElementStyle>
                    <Style TargetType="TextBlock">
                        <Setter Property="Padding" Value="10,5,10,5" />
                    </Style>
                </DataGridHyperlinkColumn.ElementStyle>
                <DataGridHyperlinkColumn.CellStyle>
                ...
  </DataGridHyperlinkColumn>

当行未聚焦时，更改DataGridHyperlinkColumn的颜色

1 个答案: