WPF工具提示闪烁

Question

我已通过以下方式在dataGrid上定义了工具提示：

<DataGridTextColumn.CellStyle>
 <Style TargetType="DataGridCell">
  <Setter Property="ToolTip" >
   <Setter.Value>
     <ListBox ItemsSource="{Binding Value.TimeStamps}"></ListBox>   
   </Setter.Value>
  </Setter>
 </Style>
</DataGridTextColumn.CellStyle>

但是工具提示闪烁，并且很难阅读内容。 如何解决这个问题？

****编辑： 绑定是一个ObservableDictionary，键和值都是ViewModel

该值具有以下属性

>    #region timeStamps
>         /// <summary>
>         /// The <see cref="TimeStamps" /> property's name.
>         /// </summary>
>         public const string TimeStampsPropertyName = "TimeStamps";
> 
>         private ObservableCollection<String> _timeStamps = new ObservableCollection<string>();
> 
>         /// <summary>
>         /// Sets and gets the TimeStamps property.
>         /// Changes to that property's value raise the PropertyChanged event. 
>         /// </summary>
>         public ObservableCollection<String> TimeStamps
>         {
>             get
>             {
>                 return _timeStamps;
>             }
>             set
>             {
>                 Set(TimeStampsPropertyName, ref _timeStamps, value);
>             }
>         }
>         #endregion

这是应在工具提示中显示的属性。