ChartPanel

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你好，我想通过ChartPanel在chart上画两条垂直线条，下面是我的代码，我想问的是，如何在C#代码中动态设置线条在坐标轴上的位置。DataPoint的值是只读的。谢谢
<c1chart:C1Chart x:Name="_chart" Grid.Column="1" Grid.Row="1" VerticalAlignment="Stretch" >
            <c1chart:C1Chart.View>
                  <c1chart:ChartView>
                     <c1chart:ChartView.Layers>
                        <c1chart:ChartPanel >
                              <c1chart:ChartPanelObject x:Name="cursor1Vertical"
                              Attach="None"
                              Action="LeftMouseButtonDrag"
                              DataPoint="0.2, NaN"
                              VerticalContentAlignment="Stretch"
                              HorizontalAlignment="Center"
                              DataPointChanged="cursor1Vertical_DataPointChanged">
                                 <Border Width = "40" Background="Transparent" Padding="1" BorderThickness="1 0 0 0" >
                                    <Border.BorderBrush>
                                          <LinearGradientBrush SpreadMethod="Repeat" StartPoint="0,5" EndPoint="5,0" MappingMode="Absolute">
                                             <LinearGradientBrush.GradientStops>
                                                <GradientStop Color="Red" Offset="0"/>
                                                <GradientStop Color="Red" Offset="0.2"/>
                                                <GradientStop Color="Transparent" Offset="0.4"/>
                                                <GradientStop Color="Transparent" Offset="0.6"/>
                                                <GradientStop Color="Red" Offset="0.8"/>
                                                <GradientStop Color="Red" Offset="1"/>
                                             </LinearGradientBrush.GradientStops>
                                          </LinearGradientBrush>
                                    </Border.BorderBrush>
                                 </Border>
                              </c1chart:ChartPanelObject>
                        </c1chart:ChartPanel>
                     </c1chart:ChartView.Layers>
                     <c1chart:ChartView.AxisY>
                        <c1chart:Axis Scale="1">
                              <c1chart:Axis.ScrollBar>
                                 <c1chart:AxisScrollBar Height="Auto" />
                              </c1chart:Axis.ScrollBar>
                              <c1:Axis.Title>
                                 <TextBlock x:Name="axisYTitle" Text="g" TextAlignment="Center" Foreground="Crimson" FontSize="20"/>
                              </c1:Axis.Title>
                        </c1chart:Axis>
                     </c1chart:ChartView.AxisY>
                     <c1chart:ChartView.AxisX>
                        <c1chart:Axis Scale="1">
                              <c1chart:Axis.ScrollBar>
                                 <c1chart:AxisScrollBar Height="Auto" />
                              </c1chart:Axis.ScrollBar>
                              <c1:Axis.Title>
                                 <TextBlock x:Name="axisXTitle" Text="s" TextAlignment="Center" Foreground="Crimson" FontSize="20"/>
                              </c1:Axis.Title>
                        </c1chart:Axis>
                     </c1chart:ChartView.AxisX>
                  </c1chart:ChartView>
            </c1chart:C1Chart.View>
            <c1chart:C1ChartLegend/>
         </c1chart:C1Chart>

Alice · Alice

回复 1楼cf10082007的帖子

根据你贴出的代码，该XMAL代码用C#代码实现如下：

var obj = new ChartPanelObject()
{
Action= ChartPanelAction.LeftMouseButtonDrag,
HorizontalAlignment = HorizontalAlignment.Center,
VerticalAlignment = VerticalAlignment.Stretch
};
var bdr = new Border()
{
Background = new SolidColorBrush(Colors.Green) { Opacity = 0.4 },
BorderBrush = new SolidColorBrush(Colors.Green),
Width=40,
BorderThickness = new Thickness(1, 0, 0, 0),
};
obj.Content = bdr;
obj.DataPoint = new Point(1, 20d);
var pnl = new ChartPanel();
pnl.Children.Add(obj);
this.chart1.View.Layers.Add(pnl);

复制代码

就是给ChartPanelObject的Content设置一个Border，然后添加到ChartPanel去，最后添加到C1Chart.View.Layers.

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