在 ComponentOne WPF&Silverlight Chart3D 的使用方法 文章中我了解了 3D 图表的基本使用方法。本篇文章中我们将叙述如何自定义坐标轴标签。
C1Chart3D 坐标轴标签由 AnnoTemplate 属性设置，我们可以通过自定义 DataTemlate 来实现标签的转换。实现起来也比较简单，使用 TextBlock 作为容器即可，XAML 代码如下：
1: <c1:C1Chart3D Name="c1Chart3D1" Grid.Row="1">
2: <c1:C1Chart3D.Resources>
3: <local:AnnoLabelConverter x:Key="alc" />
4: <DataTemplate x:Key="AnnoLabelTemplate">
5: <TextBlock Text="{Binding Converter={StaticResource alc} }"/>
6: </DataTemplate>
7: </c1:C1Chart3D.Resources>
8: <c1:C1Chart3D.AxisY>
9: <c1:Axis3D AnnoTemplate="{StaticResource AnnoLabelTemplate}"/>
10: </c1:C1Chart3D.AxisY>
11: <c1:C1Chart3D.Legend>
12: <c1:C1Chart3DLegend />
13: </c1:C1Chart3D.Legend>
14: </c1:C1Chart3D>
接下来，我们创建 AnnoLabelConverter class 来转换标签值，需要实现 IValueConverter 接口，
1: public class AnnoLabelConverter : IValueConverter
2: {
3: public object Convert(object value, System.Type targetType, object parameter,
System.Globalization.CultureInfo culture)
4: {
5: if (value != null)
6: {
7: int d;
8: if(int.TryParse(value.ToString(), out d))
9: {
10: if (d == 0)
11: return "Low";
12: else if (d == 5)
13: return "Medium";
14: else if (d == 10)
15: return "High";
16: else
17: return "";
18: }
19: }
20: return "";
21: }
22:
23: public object ConvertBack(object value, System.Type targetType, object parameter,
System.Globalization.CultureInfo culture)
24: {
25: return null;
26: }
27: }
最后，你仅需要在 XAML 页面引用当前命名空间即可：xmlns:local
效果图如下：
