UnhandledException 同时使用 winrt xaml 工具包中的图表
本文关键字:工具包 xaml winrt UnhandledException | 更新日期: 2023-09-27 18:32:37
我正在我的应用程序中使用 winrt xaml 工具包的图表。在某些屏幕中,图表工作正常,但在某些屏幕中,它现在抛出UnhandledException(早些时候它工作正常。我没有更新 ANYHTING)。我没有收到太多异常细节。图表有什么问题?
异常详细信息
System.Exception at Windows.UI.Xaml.UIElement.Measure(Size 可用大小)在 WinRTXamlToolkit.Controls.DataVisualization.Charting.Primitives.EdgePanel.MeasureOverride(Size constraint) at Windows.UI.Xaml.FrameworkElement.MeasureOverride(Size 可用大小)
"错误 HRESULT E_FAIL已从对 COM 的调用返回 组件。
下面是重新生成它的代码。我正在后面的代码中做所有的事情,因为在实际应用程序中会有动态数量的图表。
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; }
}
我遇到了同样的问题,并找到了一个非常简单的解决方案。
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#
在页面中,首先添加系列("图表:堆叠100条形系列")。在为图表控件添加系列之前,请清除序列。
例如:
ChartSalesRevenue.Series.Clear();
ChartSalesRevenue.Series.Add(...);