基于列数据的 DataGrid 单元格工具提示

Question

在我的应用程序中，我尝试实现工具提示，它将根据数据网格列的文本向我显示数据网格中的一些错误。例如，我有 4 列，其中包含用于输入一些数据的文本框，如果某些列中的数据不太符合规则，或者如果其中一些在最后 4 列上为空，我应该显示带有一些说明文本的工具提示。

<WpfToolkit:DataGridTemplateColumn Width="0.02*" IsReadOnly="True">
          <WpfToolkit:DataGridTemplateColumn.CellStyle>
            <Style TargetType="{x:Type WpfToolkit:DataGridCell}" BasedOn="{StaticResource TransparentCellSelection}">
              <Style.Triggers>

                <DataTrigger Value="1">
                  <DataTrigger.Binding>
                    <MultiBinding Converter="{StaticResource DataGridRowToolTipConverter}">
                      <Binding Path="IsRequired" />
                      <Binding Path="InputColumns.Count" />
                      <Binding Path="HasDefaultValue" />
                      <Binding Path="HasOverwritingValue" />
                      <Binding Path="MappingType" />
                      <Binding Path="SourceColumnMappings" />
                      <Binding Path="ColumnStatus" />
                    </MultiBinding>
                  </DataTrigger.Binding>
                  <Setter Property="ToolTip" Value="Translation mapping is incomplete." />
                </DataTrigger>

                <DataTrigger Value="2">
                  <DataTrigger.Binding>
                    <MultiBinding Converter="{StaticResource DataGridRowToolTipConverter}">
                      <Binding Path="IsRequired" />
                      <Binding Path="InputColumns.Count"/>
                      <Binding Path="HasDefaultValue" />
                      <Binding Path="HasOverwritingValue" />
                      <Binding Path="MappingType" />
                      <Binding Path="SourceColumnMappings" />
                      <Binding Path="ColumnStatus" />
                    </MultiBinding>
                  </DataTrigger.Binding>
                  <Setter Property="ToolTip" Value="Overwriting Value overrides Mapping. Mapping and Default Value are ignored." />
                </DataTrigger>

                <DataTrigger Value="3">
                  <DataTrigger.Binding>
                    <MultiBinding Converter="{StaticResource DataGridRowToolTipConverter}">
                      <Binding Path="IsRequired" />
                      <Binding Path="InputColumns.Count" />
                      <Binding Path="HasDefaultValue" />
                      <Binding Path="HasOverwritingValue" />
                      <Binding Path="MappingType" />
                      <Binding Path="SourceColumnMappings" />
                      <Binding Path="ColumnStatus" />
                    </MultiBinding>
                  </DataTrigger.Binding>
                  <Setter Property="ToolTip" Value="Default Value cannot be set for empty Mapping. Please define Mapping or use Overwriting Value instead of Default Value." />
                </DataTrigger>

有人知道最好的方法吗？