從winrt xaml工具包使用圖表時出現UnhandledException

Question

我在我的應用程序中使用了winrt xaml工具箱圖表。在某些屏幕圖表工作正常，但在某些屏幕上它現在拋出UnhandledException（早期它工作正常，我沒有更新ANYHTING）。我沒有得到太多的例外細節。圖表有什麼問題？

異常詳細

System.Exception的在Windows.UI.Xaml.UIElement.Measure（尺碼 availableSize）在 WinRTXamlToolkit.Controls.DataVisualization.Charting.Primitives.EdgePanel.MeasureOverride（尺碼 約束）在Windows.UI.Xaml.FrameworkElement.MeasureOverride（尺寸 availableSize）

「錯誤HRESULT E_FAIL已經從一個COM 組件的調用返回。」

這是重新生成它的代碼。我正在做所有的代碼背後的東西，因爲在真正的應用程序中會有動態數量的圖表。

XAML

<Page.Resources> 
    <Style TargetType="charting:ColumnDataPoint" x:Key="MyColumnDataPointStyle"> 
     <Setter Property="Template"> 
      <Setter.Value> 
       <ControlTemplate TargetType="charting:ColumnDataPoint"> 
        <Grid> 
         <ToolTipService.ToolTip> 
          <ContentControl> 
           <TextBlock Text="{Binding Tooltip}" TextAlignment="Center" /> 
          </ContentControl> 
         </ToolTipService.ToolTip> 
         <Rectangle Fill="{Binding Color}" Stroke="{Binding Color}" StrokeThickness="3" /> 
        </Grid> 
       </ControlTemplate> 
      </Setter.Value> 
     </Setter> 
    </Style> 
</Page.Resources> 

<Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}"> 
    <charting:Chart x:Name="ChartSalesRevenue" Margin="70,0" /> 
</Grid> 

C＃

protected override void OnNavigatedTo(NavigationEventArgs e) 
{ 
    ChartSalesRevenue.Series.Clear(); 
    ChartSalesRevenue.Series.Add(new StackedColumnSeries()); 
    Binding DependentBinding = new Binding(); 
    Binding IndependentBinding = new Binding(); 
    IndependentBinding.Converter = new DateToStringConverter(); 
    SeriesDefinition series; 

    series = new SeriesDefinition(); 
    series.DataPointStyle = this.Resources["MyColumnDataPointStyle"] as Style; 
    DependentBinding.Path = new PropertyPath("Units"); 
    IndependentBinding.Path = new PropertyPath("Begin_Date"); 
    series.DependentValueBinding = DependentBinding; 
    series.IndependentValueBinding = IndependentBinding; 
    series.ItemsSource = GetDataItems(); 

    ((StackedColumnSeries)ChartSalesRevenue.Series[0]).SeriesDefinitions.Add(series); 
} 

private List<DataItem> GetDataItems() 
{ 
    return new List<DataItem> 
    { 
     new DataItem("Tooltip 1", new SolidColorBrush(Colors.Red), 5, DateTime.Now.AddDays(-1)), 
     new DataItem("Tooltip 2", new SolidColorBrush(Colors.Violet), 3, DateTime.Now.AddDays(1)), 
     new DataItem("Tooltip 3", new SolidColorBrush(Colors.PaleGoldenrod), 22, DateTime.Now.AddDays(-2)), 
     new DataItem("Tooltip 4", new SolidColorBrush(Colors.DarkBlue), 15, DateTime.Now.AddDays(2)), 
     new DataItem("Tooltip 5", new SolidColorBrush(Colors.DeepPink), 9, DateTime.Now), 
    }; 
} 

public class DateToStringConverter : IValueConverter 
{ 
    public object Convert(object value, Type targetType, object parameter, string Language) 
    { 
     return ((DateTime)value).ToString("MMM dd, yyyy", System.Globalization.CultureInfo.InvariantCulture); 
    } 

    public object ConvertBack(object value, Type targetType, object parameter, string language) 
    { 
     throw new NotImplementedException(); 
    } 
} 

public class DataItem 
{ 
    public DataItem(string _Tooltip, SolidColorBrush _Color, int _Units, DateTime _Begin_Date) 
    { 
     Tooltip = _Tooltip; 
     Color = _Color; 
     Units = _Units; 
     Begin_Date = _Begin_Date; 
    } 
    public string Tooltip { get; set; } 
    public SolidColorBrush Color { get; set; } 
    public int Units { get; set; } 
    public DateTime Begin_Date { get; set; } 
} 

Answer 1

我遇到同樣的問題，並發現了一個很簡單的解決方案。

XAML

<charting:Chart x:Name="ChartSalesRevenue" Margin="70,0" > 
     <charting:Stacked100BarSeries> 
      <charting:SeriesDefinition 
        DependentValuePath="Value" 
        IndependentValuePath="Name" 
        IsTapEnabled="True" 
        Title="" /> 
     </charting:Stacked100BarSeries> 
    </charting:Chart> 

C＃

首先在頁面上，添加系列（ 「圖表：Stacked100BarSeries」）在您添加的圖表控制，清除系列系列。

如：

   ChartSalesRevenue.Series.Clear(); 
       ChartSalesRevenue.Series.Add(...);