在我的WPF页面中，我创建了一种样式，我想将其应用于datagridcell。这是代码：

<Style x:Key="dgTextCol" TargetType="datagridcell">
                <EventSetter Event="PreviewMouseLeftButtonUp" Handler="editInEditor"/>
                <Setter Property="Background" Value="#f7f6f6" />
                <Setter Property="BorderThickness" Value="0" />
                <Setter Property="ToolTip" Value="{Binding RelativeSource={RelativeSource Self},Path=Text}"/>
                <Setter Property="Padding" Value="6,12" />
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type datagridcell}">
                            <Border Padding="{TemplateBinding Padding}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" snapsToDevicePixels="True">
                                <ContentPresenter snapsToDevicePixels="{TemplateBinding snapsToDevicePixels}" />
                            </Border>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
                <Style.Triggers>
                    <DataTrigger Binding="{Binding IsDirty}" Value="True">
                        <Setter Property="Background" Value="{StaticResource IsDirtyColor}" />
                        <Setter Property="BorderBrush" Value="{StaticResource IsDirtyColor}" />
                    </DataTrigger>
                    <Trigger Property="IsSelected" Value="True">
                        <Setter Property="BorderBrush" Value="Transparent"/>                        
                        <Setter Property="Background" Value="#eeeeee"/>
                        <Setter Property="Foreground" Value="#000000"/>
                    </Trigger>
                    <Trigger Property="IsSelected" Value="False">
                        <Setter Property="Background" Value="#f7f6f6"/>
                        <Setter Property="Foreground" Value="#000000"/>
                    </Trigger>
                    <Trigger Property="IsEditing" Value="true">
                        <Setter Property="Background" Value="#ffffff" />
                        <Setter Property="Padding" Value="6,12"/>
                        <Setter Property="BorderThickness" Value="0"/>
                    </Trigger>
                </Style.Triggers>
            </Style>

除了工具提示之外，它都可以正常工作，因为我无法获取TextBlock的值。基本上没有工具提示出现。有帮助吗？