导致xamDataGrid重绘

我需要一种方法来指导视图上的XamDataGrid以最小的麻烦重新读取和重新绘制其单元格。我不希望弄乱源，并通过引发其事件来做一些不可持续的工作(源可能会更改)。

为了更容易理解，我有一个全局静态类，它包含一些视觉提示配置，这些配置不影响数据，但只影响其在网格中的表示方式(缩放，格式化等)。视觉动作发生在附属于该领域的IValueConverter执行中，它工作得很好。有一个静态事件，当线索改变时触发，视图模型订阅它，事件正确触发。现在我只需要让事件处理程序导致网格重新绘制。

有什么建议吗?

编辑:一些代码，如果有帮助的话:

转换器:

public class ScaleConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (targetType == typeof(double) || targetType == typeof(double?))
        {
            if (value == null && targetType == typeof(double?)) return null;  // short circuit for null->null, nothing to scale
            if (value is double) return (double)value / DisplayScale.Scale; // shortcut for direct scaling, no need to waste time on conversion
            try
            {
                return System.Convert.ToDouble(value) / DisplayScale.Scale; // for convertible values, eat conversion exception
            }
            catch (Exception) {};
            // if all esle fails return NaN
            return double.NaN; 
        }
        // fallthrough, return null, this should not happen, if it does it means converter is incomplete
        return null;
    }
 ...
}

DisplayScale全球

public class DisplayScale: NotificationObject
{
    private static KeyValuePair<string, double> _ActiveScaling;
    private static readonly object _lockHandle = new object(); // note: should not contest, but just to be on the safe side
    public static event Action ScalingChanged;
    public static List<KeyValuePair<string, double>> ScaleList { get; private set; }
    static DisplayScale()
    {
        ScaleList = new List<KeyValuePair<string, double>>() 
        { 
            new KeyValuePair<string, double>("No scaling (1's)", 1d),
            new KeyValuePair<string, double>("Thousands (1,000's)", 1000d),
            new KeyValuePair<string, double>("Millions (1,000,000's)", 1000000d),
            new KeyValuePair<string, double>("Billions (1,000,000,000's)", 1000000000d)
         };
        ActiveScaling = ScaleList.First();  // OPTION: could be in per-user config
    }
    public static double Scale { get { return ActiveScaling.Value; } }
    public static KeyValuePair<string, double> ActiveScaling
    {
        get
        {
            lock (_lockHandle) return _ActiveScaling;
        }
        set
        {
            lock (_lockHandle)
            {
                _ActiveScaling = value;
                var eventCall = ScalingChanged;
                if (eventCall != null) eventCall();
            }
        }
    }
}

字段定义为

// resource
<inf:ScaleConverter x:Key="ScaleConverter" />
// field
<igDP:Field Name="Deposit" Converter="{StaticResource ScaleConverter}">

public class YourViewModel
{
  private ObservableCollection<YourDataClass> yourColl;
  public void YourViewModel()
  {
    yourColl = new ObservableCollection<YourDataClass>();
    YourCollectionView = CollectionViewSource.GetDefaultView(yourColl);
    DisplayScale.ScalingChanged += () => YourCollectionView.Refresh();
  }
  var ICollectionView yourCollView;
  public ICollectionView YourCollectionView
  {
    get { yourCollView; }
    set {
      yourCollView = value;
      RaisePropertyChanged("YourCollectionView");
    }
  }
}