<TextBlock HorizontalAlignment="Left" Text="{Binding HwContent, Converter={StaticResource TextSerialize}}" VerticalAlignment="Top" Margin="76,26,160,0" TextTrimming="CharacterEllipsis" Grid.Column="0" Height="Auto" FontSize="14" LineHeight="24" Cursor="Hand" TextWrapping="NoWrap" Foreground="{DynamicResource Foreground_Gray_level2}">
<TextBlock.ToolTip >
<ContentControl Content="{Binding HwContent}" >
<ContentControl.ContentTemplate>
<DataTemplate>
<Border MaxWidth="600" MinHeight="16" MaxHeight="320" Padding="5,5,5,5">
<TextBlock TextWrapping="Wrap" TextTrimming="CharacterEllipsis" Text="{Binding Mode=OneTime}"/>
</Border>
</DataTemplate>
</ContentControl.ContentTemplate>
</ContentControl>
</TextBlock.ToolTip>
</TextBlock>
ContentPresenter显示不出来,但是ContentControl 能显示出来