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我們有一個圖表控件,它並排顯示條形圖。它基於ArguementDataMember「x」和ValueDataMember「y」。圖表與具有屬性x,y,z的數據源(chartData,observablecollection)綁定。 我試圖在系列標籤中顯示「z」。但不能。收到錯誤圖表中的自定義系列標籤WPF
"BindingExpression path error: 'z' property not found on 'object' ''SeriesLabelItem' (HashCode=58379838)'. BindingExpression:Path=z; DataItem='SeriesLabelItem' (HashCode=58379838); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')"
我的代碼是像下面
<dxc:BarSideBySideSeries2D DisplayName="Last Year" Brush="Goldenrod" ArgumentScaleType="Qualitative" ArgumentDataMember="x"
ValueDataMember="y" ToolTipEnabled="False" Name="Last" DataSource="{Binding ChartData}">
<dxc:BarSideBySideSeries2D.Label >
<dxc:SeriesLabel Visible="True" VerticalAlignment="Center" Name="lblLast" DataContext="{Binding ChartData}">
<dxc:SeriesLabel.ElementTemplate>
<DataTemplate>
<TextBlock Text="{Binding z}" Foreground="Black" FontSize="10" FontWeight="Bold" Background="White">
</TextBlock>
</DataTemplate>
</dxc:SeriesLabel.ElementTemplate>
</dxc:SeriesLabel>
</dxc:BarSideBySideSeries2D.Label>
<dxc:BarSideBySideSeries2D.Model>
<dxc:SimpleBar2DModel/>
</dxc:BarSideBySideSeries2D.Model>
</dxc:BarSideBySideSeries2D>