Right-click on a RadCartesianChart

[Jennifer]

I'm new to this so I'm hoping to find some direction.  I have a plot on in a RadCartesianChart.  I want to be able to right-click and capture the location of the mouse at that place. Before we had a double click mouse event and were able to do this:

1.private void ChartSelectionBehavior_SelectionChanged(object sender, Telerik.Windows.Controls.ChartView.ChartSelectionChangedEventArgs e)
2.{
3.     if (e.AddedPoints.Count > 0)
4.     {
5.          ViewModel.NotePoint = e.AddedPoints[0].DataItem as GraphPlots;
6.     }
7.}​

Now I have this:

private void standardGraph_MouseRightButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
     //I want to set the NotePoint of the View Model to the location
     //of the right-mouse click here

     plotContextMenu.Visibility = System.Windows.Visibility.Visible;
}​

I can get the location of the MouseButtonEvent, but once I do I'm not sure how to set it as a GraphPlot.

Here's my XML:

01.<telerik:RadCartesianChart Visibility="{Binding StdGraphVisibility}"
02.     x:Name="standardGraph"
03.     Height="500"
04.     Width="1000"
05.     MouseRightButtonDown="mouseRightButtonDown"
06.     MouseRightButtonUp="standardGraph_MouseRightButtonUp">
07.
08.    <telerik:RadContextMenu.ContextMenu>
09.
10.        <telerik:RadContextMenu x:Name="plotContextMenu"
11.            Visibility="Hidden">
12.
13.            <telerik:RadMenuItem Header="Add note"
14.                x:Name="addNoteMenuItem"
15.                Click="addNoteMenuItem_Click" />
16.
17.            </telerik:RadContextMenu>
18.        </telerik:RadContextMenu.ContextMenu>
19.
20.        <telerik:RadCartesianChart.Behaviors>
21.
22.            <telerik:ChartSelectionBehavior DataPointSelectionMode="Single"
23.                SelectionChanged="ChartSelectionBehavior_SelectionChanged"/>
24.
25.        </telerik:RadCartesianChart.Behaviors>
26.
27.        <telerik:RadCartesianChart.HorizontalAxis>
28.        </telerik:RadCartesianChart.HorizontalAxis>
29.
30.        <telerik:RadCartesianChart.VerticalAxis>
31.        </telerik:RadCartesianChart.VerticalAxis>
32.
33.        <telerik:RadCartesianChart.Grid>
34.
35.            <chartView:CartesianChartGrid MajorLinesVisibility="Y" StripLinesVisibility="Y" />
36.
37.        </telerik:RadCartesianChart.Grid>
38.
39.        <telerik:RadCartesianChart.Series>
40.            <telerik:LineSeries Stroke="Orange"
41.                CategoryBinding="Category"
42.                ValueBinding="Value"
43.                ItemsSource="{Binding GraphValue}">
44.            </telerik:LineSeries>
45.
46.        <telerik:PointSeries CategoryBinding="Category"
47.            ValueBinding="Value"
48.            ItemsSource="{Binding Notes}">
49.        </telerik:PointSeries>
50.    </telerik:RadCartesianChart.Series>
51.</telerik:RadCartesianChart>

 

[Petar Marchev]

Hi Jennifer,

If the user has clicked on a data point visual, you should be able to retrieve the DataPoint from the DataContext of the OriginalSource. From the data point you should be able to get the underlying GraphPlots just as you did before via casting the DataItem property of the data point. Let us know if this information suffice.

Regards,
Petar Marchev
Telerik