自定义坐标轴标注

在某些情况下，您可能需要创建自定义坐标轴标注。下面的场景中，创建自定义坐标轴标注会比较有用：

当ItemsSource（在线文档 'ItemsSource属性'）属性是一个数值或日期类型的值的集合，且图表使用这些值做为坐标轴标签。下面的代码使用ItemsSource属性创建 Y-轴的自定义标签：

C#	拷贝代码
c1Chart1.Reset(true); c1Chart1.Data.Children.Add( new DataSeries() { ValuesSource = new double[] { 1, 2, 1, 3, 1, 4 } }); c1Chart1.ChartType = ChartType.LineSymbols; c1Chart1.View.AxisY.ItemsSource = new double[] { 1.25, 1.5, 1.75, 4 };

拷贝代码

c1Chart1.Reset(true);
        c1Chart1.Data.Children.Add(
          new DataSeries() { ValuesSource = new double[] { 1, 2, 1, 3, 1, 4 } });
        c1Chart1.ChartType = ChartType.LineSymbols;
        c1Chart1.View.AxisY.ItemsSource = new double[] { 1.25, 1.5, 1.75, 4 };

下面是添加前面的代码后，该图表的外观：

C#	拷贝代码
c1Chart1.Reset(true); c1Chart1.Data.Children.Add( new DataSeries() { ValuesSource = new double[] { 1, 2, 1, 3, 1, 4 } }); c1Chart1.ChartType = ChartType.LineSymbols; c1Chart1.View.AxisY.ItemsSource = new List<KeyValuePair<object,double>> { new KeyValuePair<object,double>("Min=1", 1), new KeyValuePair<object,double>("Average=2.5", 2.5), new KeyValuePair<object,double>("Max=4", 4)};

拷贝代码

c1Chart1.Reset(true);

        c1Chart1.Data.Children.Add(
          new DataSeries() { ValuesSource = new double[] { 1, 2, 1, 3, 1, 4 } });
        c1Chart1.ChartType = ChartType.LineSymbols;

        c1Chart1.View.AxisY.ItemsSource = new List<KeyValuePair<object,double>>
          { new KeyValuePair<object,double>("Min=1", 1),
            new KeyValuePair<object,double>("Average=2.5", 2.5),
            new KeyValuePair<object,double>("Max=4", 4)};

下面是添加前面的代码后，该图表的外观：

您可以使用ItemsValueBinding（在线文档 'ItemsValueBinding 属性'）属性以及ItemsLabelBinding属性以创建坐标轴标签，使用任意集合作为数据源，如下面的代码：

C#	拷贝代码
c1Chart1.Reset(true); Point[] pts = new Point[] { new Point(1, 1.3), new Point(2, 2.7), new Point(3, 3.9) }; c1Chart1.DataContext = pts; c1Chart1.ChartType = ChartType.LineSymbols; c1Chart1.View.AxisY.ItemsSource = pts; c1Chart1.View.AxisY.ItemsValueBinding = new Binding("Y"); c1Chart1.View.AxisY.ItemsLabelBinding = new Binding();

拷贝代码

c1Chart1.Reset(true);

        Point[] pts = new Point[] { new Point(1, 1.3), new Point(2, 2.7), new Point(3, 3.9) };
        c1Chart1.DataContext = pts;
        c1Chart1.ChartType = ChartType.LineSymbols;

        c1Chart1.View.AxisY.ItemsSource = pts;
        c1Chart1.View.AxisY.ItemsValueBinding = new Binding("Y");
        c1Chart1.View.AxisY.ItemsLabelBinding = new Binding();

下面是添加前面的代码后，该图表的外观：

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创建一个标注模板